Failed to Get Role Assignment on All Resources

## Description

I'm attempting to find all assignments on every resource in a subscription.

The exception, "Scope should have even number of parts.", happens with the call to `Get-AzRoleAssignment`

Example Scope: `"/subscriptions/mysubid/resourceGroups/myrgname/providers/Microsoft.Compute/extensions/confluence/OmsAgentForLinux"`

Looks like the problem is found here:
azure-powershell/src/Resources/Resources/Models.Authorization/AuthorizationClient.cs

## Steps to reproduce

Given a resource exists that creates a scope called `"/subscriptions/mysubid/resourceGroups/myrgname/providers/Microsoft.Compute/extensions/confluence/OmsAgentForLinux"`

```powershell
$resources = Get-AzResource -DefaultProfile $context
foreach($resource in $resources) {
$assignments = Get-AzRoleAssignment -ResourceGroupName $resource.ResourceGroupName -ResourceName $resource.Name -ResourceType $resource.ResourceType -IncludeClassicAdministrators -DefaultProfile $context

```

## Environment data

```
Name Value
---- -----
PSVersion 6.2.2
PSEdition Core
GitCommitId 6.2.2
OS Microsoft Windows 10.0.17763
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0

```

## Module versions

```powershell
ModuleType Version Name PSEdition ExportedCommands
---------- ------- ---- --------- ----------------
Script 2.4.0 Az Core,Desk
Script 1.6.0 Az.Accounts Core,Desk {Disable-AzDataCollection, Disable-AzContextAutosave, Enab…
Script 1.0.0 Az.Advisor Core,Desk {Get-AzAdvisorRecommendation, Enable-AzAdvisorRecommendati…
Script 1.0.1 Az.Aks Core,Desk {Get-AzAks, New-AzAks, Remove-AzAks, Import-AzAksCredentia…
Script 1.1.0 Az.AnalysisServices Core,Desk {Resume-AzAnalysisServicesServer, Suspend-AzAnalysisServic…
Script 1.2.0 Az.ApiManagement Core,Desk {Add-AzApiManagementApiToProduct, Add-AzApiManagementProdu…
Script 1.0.0 Az.ApplicationInsights Core,Desk {Get-AzApplicationInsights, New-AzApplicationInsights, Rem…
Script 1.3.0 Az.Automation Core,Desk {Get-AzAutomationHybridWorkerGroup, Remove-AzAutomationHyb…
Script 1.1.0 Az.Batch Core,Desk {Remove-AzBatchAccount, Get-AzBatchAccount, Get-AzBatchAcc…
Script 1.0.0 Az.Billing Core,Desk {Get-AzBillingInvoice, Get-AzBillingPeriod, Get-AzEnrollme…
Script 1.3.0 Az.Cdn Core,Desk {Get-AzCdnProfile, Get-AzCdnProfileSsoUrl, New-AzCdnProfil…
Script 1.1.1 Az.CognitiveServices Core,Desk {Get-AzCognitiveServicesAccount, Get-AzCognitiveServicesAc…
Script 2.4.0 Az.Compute Core,Desk {Remove-AzAvailabilitySet, Get-AzAvailabilitySet, New-AzAv…
Script 1.0.1 Az.ContainerInstance Core,Desk {New-AzContainerGroup, Get-AzContainerGroup, Remove-AzCont…
Script 1.0.1 Az.ContainerRegistry Core,Desk {New-AzContainerRegistry, Get-AzContainerRegistry, Update-…
Script 1.1.2 Az.DataFactory Core,Desk {Set-AzDataFactoryV2, Update-AzDataFactoryV2, Get-AzDataFa…
Script 1.0.0 Az.DataLakeAnalytics Core,Desk {Get-AzDataLakeAnalyticsDataSource, New-AzDataLakeAnalytic…
Script 1.2.1 Az.DataLakeStore Core,Desk {Get-AzDataLakeStoreTrustedIdProvider, Remove-AzDataLakeSt…
Script 1.0.0 Az.DeploymentManager Core,Desk {Get-AzDeploymentManagerArtifactSource, New-AzDeploymentMa…
Script 1.0.0 Az.DevTestLabs Core,Desk {Get-AzDtlAllowedVMSizesPolicy, Get-AzDtlAutoShutdownPolic…
Script 1.1.1 Az.Dns Core,Desk {Get-AzDnsRecordSet, New-AzDnsRecordConfig, Remove-AzDnsRe…
Script 1.2.1 Az.EventGrid Core,Desk {New-AzEventGridTopic, Get-AzEventGridTopic, Set-AzEventGr…
Script 1.2.0 Az.EventHub Core,Desk {New-AzEventHubNamespace, Get-AzEventHubNamespace, Set-AzE…
Script 1.1.0 Az.FrontDoor Core,Desk {New-AzFrontDoor, Get-AzFrontDoor, Set-AzFrontDoor, Remove…
Script 2.0.0 Az.HDInsight Core,Desk {Get-AzHDInsightJob, New-AzHDInsightSqoopJobDefinition, Wa…
Script 1.2.0 Az.IotHub Core,Desk {Add-AzIotHubKey, Get-AzIotHubEventHubConsumerGroup, Get-A…
Script 1.2.0 Az.KeyVault Core,Desk {Add-AzKeyVaultCertificate, Update-AzKeyVaultCertificate, …
Script 1.2.1 Az.LogicApp Core,Desk {Get-AzIntegrationAccountAgreement, Get-AzIntegrationAccou…
Script 1.1.0 Az.MachineLearning Core,Desk {Move-AzMlCommitmentAssociation, Get-AzMlCommitmentAssocia…
Script 1.0.0 Az.MarketplaceOrdering Core,Desk {Get-AzMarketplaceTerms, Set-AzMarketplaceTerms}
Script 1.1.0 Az.Media Core,Desk {Sync-AzMediaServiceStorageKey, Set-AzMediaServiceKey, Get…
Script 1.2.1 Az.Monitor Core,Desk {Get-AzMetricDefinition, Get-AzMetric, Remove-AzLogProfile…
Script 1.11.0 Az.Network Core,Desk {Add-AzApplicationGatewayAuthenticationCertificate, Get-Az…
Script 1.1.0 Az.NotificationHubs Core,Desk {Get-AzNotificationHub, Get-AzNotificationHubAuthorization…
Script 1.3.1 Az.OperationalInsights Core,Desk {New-AzOperationalInsightsAzureActivityLogDataSource, New-…
Script 1.1.2 Az.PolicyInsights Core,Desk {Get-AzPolicyEvent, Get-AzPolicyState, Get-AzPolicyStateSu…
Script 1.1.0 Az.PowerBIEmbedded Core,Desk {Remove-AzPowerBIWorkspaceCollection, Get-AzPowerBIWorkspa…
Script 1.4.2 Az.RecoveryServices Core,Desk {Get-AzRecoveryServicesBackupProperty, Get-AzRecoveryServi…
Script 1.1.0 Az.RedisCache Core,Desk {Remove-AzRedisCachePatchSchedule, New-AzRedisCacheSchedul…
Script 1.0.1 Az.Relay Core,Desk {New-AzRelayNamespace, Get-AzRelayNamespace, Set-AzRelayNa…
Script 1.6.0 Az.Resources Core,Desk {Get-AzProviderOperation, Remove-AzRoleAssignment, Get-AzR…
Script 1.2.1 Az.ServiceBus Core,Desk {New-AzServiceBusNamespace, Get-AzServiceBusNamespace, Set…
Script 1.1.1 Az.ServiceFabric Core,Desk {Add-AzServiceFabricApplicationCertificate, Add-AzServiceF…
Script 1.0.2 Az.SignalR Core,Desk {New-AzSignalR, Get-AzSignalR, Get-AzSignalRKey, New-AzSig…
Script 1.13.0 Az.Sql Core,Desk {Get-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlData…
Script 1.5.0 Az.Storage Core,Desk {Get-AzStorageAccount, Get-AzStorageAccountKey, New-AzStor…
Script 1.1.1 Az.StorageSync Core,Desk {Invoke-AzStorageSyncCompatibilityCheck, New-AzStorageSync…
Script 1.0.0 Az.StreamAnalytics Core,Desk {Get-AzStreamAnalyticsFunction, Get-AzStreamAnalyticsDefau…
Script 1.0.1 Az.TrafficManager Core,Desk {Add-AzTrafficManagerCustomHeaderToEndpoint, Remove-AzTraf…
Script 1.3.0 Az.Websites Core,Desk {Get-AzAppServicePlan, Set-AzAppServicePlan, New-AzAppServ…
Manifest 2.0.2 AzTable Desk {Add-AzTableRow, Get-AzTableRow, Get-AzTableRowAll, Get-Az…

Directory: C:\program files\powershell\6\Modules

ModuleType Version Name PSEdition ExportedCommands
---------- ------- ---- --------- ----------------
Manifest 6.1.0.0 CimCmdlets Core {Get-CimAssociatedInstance, Get-CimClass, Get-CimInstance,…
Manifest 1.2.3.0 Microsoft.PowerShell.Archive Desk {Compress-Archive, Expand-Archive}
Manifest 6.1.0.0 Microsoft.PowerShell.Diagnostics Core {Get-WinEvent, New-WinEvent}
Manifest 6.1.0.0 Microsoft.PowerShell.Host Core {Start-Transcript, Stop-Transcript}
Manifest 6.1.0.0 Microsoft.PowerShell.Management Core {Add-Content, Clear-Content, Clear-ItemProperty, Join-Path…
Manifest 6.1.0.0 Microsoft.PowerShell.Security Core {Get-Acl, Set-Acl, Get-PfxCertificate, Get-Credential…}
Manifest 6.1.0.0 Microsoft.PowerShell.Utility Core {Export-Alias, Get-Alias, Import-Alias, New-Alias…}
Manifest 6.1.0.0 Microsoft.WSMan.Management Core {Disable-WSManCredSSP, Enable-WSManCredSSP, Get-WSManCredS…
Script 1.3.2 PackageManagement Desk {Find-Package, Get-Package, Get-PackageProvider, Get-Packa…
Script 2.1.3 PowerShellGet Desk {Find-Command, Find-DSCResource, Find-Module, Find-RoleCap…
Script 0.0 PSDesiredStateConfiguration Desk {Get-InnerMostErrorRecord, Get-PublicKeyFromFile, StrongCo…
Script 6.1.0.0 PSDiagnostics Core {Disable-PSTrace, Disable-PSWSManCombinedTrace, Disable-WS…
Script 2.0.0 PSReadLine Desk {Get-PSReadLineKeyHandler, Set-PSReadLineKeyHandler, Remov…
Binary 1.1.2 ThreadJob Desk Start-ThreadJob

Directory: C:\Windows\system32\WindowsPowerShell\v1.0\Modules

ModuleType Version Name PSEdition ExportedCommands
---------- ------- ---- --------- ----------------
Manifest 2.0.1.0 Appx Core,Desk {Add-AppxPackage, Get-AppxPackage, Get-AppxPackageManifest…
Script 1.0.0.0 AssignedAccess Core,Desk {Clear-AssignedAccess, Get-AssignedAccess, Set-AssignedAcc…
Manifest 1.0.0.0 BitLocker Core,Desk {Unlock-BitLocker, Suspend-BitLocker, Resume-BitLocker, Re…
Manifest 1.0.0.0 BranchCache Core,Desk {Add-BCDataCacheExtension, Clear-BCCache, Disable-BC, Disa…
Manifest 1.0 Defender Core,Desk {Get-MpPreference, Set-MpPreference, Add-MpPreference, Rem…
Manifest 1.0.0.0 DirectAccessClientComponents Core,Desk {Disable-DAManualEntryPointSelection, Enable-DAManualEntry…
Manifest 1.0.0.0 DnsClient Core,Desk {Resolve-DnsName, Clear-DnsClientCache, Get-DnsClient, Get…
Manifest 1.0.0.0 EventTracingManagement Core,Desk {Start-EtwTraceSession, New-EtwTraceSession, Get-EtwTraceS…
Manifest 1.0.0.0 HgsDiagnostics Core,Desk {New-HgsTraceTarget, Get-HgsTrace, Get-HgsTraceFileData, T…
Binary 2.0.0.0 Hyper-V Core,Desk {Add-VMAssignableDevice, Add-VMDvdDrive, Add-VMFibreChanne…
Binary 1.1 Hyper-V Core,Desk {Add-VMDvdDrive, Add-VMFibreChannelHba, Add-VMHardDiskDriv…
Manifest 3.0.0.0 Microsoft.PowerShell.Diagnostics Core,Desk {Get-WinEvent, Get-Counter, Import-Counter, Export-Counter…
Manifest 1.0.0.0 Microsoft.PowerShell.LocalAccounts Core,Desk {Add-LocalGroupMember, Disable-LocalUser, Enable-LocalUser…
Manifest 3.1.0.0 Microsoft.PowerShell.Management Core,Desk {Add-Content, Clear-Content, Clear-ItemProperty, Join-Path…
Manifest 1.0 MMAgent Core,Desk {Disable-MMAgent, Enable-MMAgent, Set-MMAgent, Get-MMAgent…
Manifest 2.0.0.0 NetAdapter Core,Desk {Disable-NetAdapter, Disable-NetAdapterBinding, Disable-Ne…
Manifest 1.0.0.0 NetConnection Core,Desk {Get-NetConnectionProfile, Set-NetConnectionProfile}
Manifest 1.0.0.0 NetEventPacketCapture Core,Desk {New-NetEventSession, Remove-NetEventSession, Get-NetEvent…
Manifest 2.0.0.0 NetLbfo Core,Desk {Add-NetLbfoTeamMember, Add-NetLbfoTeamNic, Get-NetLbfoTea…
Manifest 1.0.0.0 NetNat Core,Desk {Get-NetNat, Get-NetNatExternalAddress, Get-NetNatStaticMa…
Manifest 2.0.0.0 NetQos Core,Desk {Get-NetQosPolicy, Set-NetQosPolicy, Remove-NetQosPolicy, …
Manifest 2.0.0.0 NetSecurity Core,Desk {Get-DAPolicyChange, New-NetIPsecAuthProposal, New-NetIPse…
Manifest 1.0.0.0 NetSwitchTeam Core,Desk {New-NetSwitchTeam, Remove-NetSwitchTeam, Get-NetSwitchTea…
Manifest 1.0.0.0 NetTCPIP Core,Desk {Get-NetIPAddress, Get-NetIPInterface, Get-NetIPv4Protocol…
Manifest 1.0.0.0 NetWNV Core,Desk {Get-NetVirtualizationProviderAddress, Get-NetVirtualizati…
Manifest 1.0.0.0 NetworkConnectivityStatus Core,Desk {Get-DAConnectionStatus, Get-NCSIPolicyConfiguration, Rese…
Manifest 1.0.0.0 NetworkSwitchManager Core,Desk {Disable-NetworkSwitchEthernetPort, Enable-NetworkSwitchEt…
Manifest 1.0.0.0 NetworkTransition Core,Desk {Add-NetIPHttpsCertBinding, Disable-NetDnsTransitionConfig…
Manifest 1.0.0.0 PcsvDevice Core,Desk {Get-PcsvDevice, Start-PcsvDevice, Stop-PcsvDevice, Restar…
Manifest 1.0.0.0 PnpDevice Core,Desk {Get-PnpDevice, Get-PnpDeviceProperty, Enable-PnpDevice, D…
Manifest 1.0.0.0 ScheduledTasks Core,Desk {Get-ScheduledTask, Set-ScheduledTask, Register-ScheduledT…
Manifest 2.0.0.0 SecureBoot Core,Desk {Confirm-SecureBootUEFI, Set-SecureBootUEFI, Get-SecureBoo…
Manifest 2.0.0.0 SmbShare Core,Desk {Get-SmbShare, Remove-SmbShare, Set-SmbShare, Block-SmbSha…
Manifest 2.0.0.0 SmbWitness Core,Desk {Get-SmbWitnessClient, Move-SmbWitnessClient, gsmbw, msmbw…
Manifest 1.0.0.0 StartLayout Core,Desk {Export-StartLayout, Import-StartLayout, Export-StartLayou…
Manifest 2.0.0.0 Storage Core,Desk {Add-InitiatorIdToMaskingSet, Add-PartitionAccessPath, Add…
Manifest 2.0.0.0 TrustedPlatformModule Core,Desk {Get-Tpm, Initialize-Tpm, Clear-Tpm, Unblock-Tpm…}
Manifest 2.0.0.0 VpnClient Core,Desk {Add-VpnConnection, Set-VpnConnection, Remove-VpnConnectio…
Manifest 1.0.0.0 Wdac Core,Desk {Get-OdbcDriver, Set-OdbcDriver, Get-OdbcDsn, Add-OdbcDsn…}
Manifest 1.0.0.0 WindowsDeveloperLicense Core,Desk {Get-WindowsDeveloperLicense, Unregister-WindowsDeveloperL…
Script 1.0 WindowsErrorReporting Core,Desk {Enable-WindowsErrorReporting, Disable-WindowsErrorReporti…
Manifest 1.0.0.0 WindowsUpdate Core,Desk Get-WindowsUpdateLog
Manifest 1.0.0.2 WindowsUpdateProvider Core,Desk {Get-WUAVersion, Get-WULastInstallationDate, Get-WULastSca…

Directory: C:\Users\myuser\.vscode\extensions\ms-vscode.powershell-2019.5.0\modules

ModuleType Version Name PSEdition ExportedCommands
---------- ------- ---- --------- ----------------
Script 1.1.3 Plaster Desk {Invoke-Plaster, New-PlasterManifest, Get-PlasterTemplate,…
Script 1.12.1 PowerShellEditorServices Desk {Start-EditorServicesHost, Get-PowerShellEditorServicesVer…
Script 0.2.0 PowerShellEditorServices.VSCode Desk {New-VSCodeHtmlContentView, Show-VSCodeHtmlContentView, Cl…
Script 1.18.0 PSScriptAnalyzer Desk {Get-ScriptAnalyzerRule, Invoke-ScriptAnalyzer, Invoke-For…

```

## Debug output

```
DEBUG: 9:36:39 AM - GetAzureRoleAssignmentCommand begin processing with ParameterSet 'ResourceParameterSet'.
DEBUG: 9:36:39 AM - using account id 'my@email.com'...
DEBUG: [ADAL]: Information: 2019-08-08T16:36:39.8523571Z: 00000000-0000-0000-0000-000000000000 - LoggerBase.cs: Serializing token cache with 4 items.

Get-AzRoleAssignment : Scope '/subscriptions/mysubscription/resourceGroups/myrg/providers/Microsoft.Compute/extensions/PowerBIReports/IaaSAntimalware' should have even number of parts.
At C:\Users\myuser\OneDrive - Microsoft\src\myproject\scripts\myscript.ps1:171 char:36
+ ... signments = Get-AzRoleAssignment -ResourceGroupName $resource.Resourc ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : CloseError: (:) [Get-AzRoleAssignment], ArgumentException
+ FullyQualifiedErrorId : Microsoft.Azure.Commands.Resources.GetAzureRoleAssignmentCommand

DEBUG: AzureQoSEvent: CommandName - Get-AzRoleAssignment; IsSuccess - False; Duration - 00:00:00.0341642; Exception - System.ArgumentException: Scope '/subscriptions/mysubscriptionid/resourceGroups/myrg/providers/Microsoft.Compute/extensions/PowerBIReports/IaaSAntimalware' should have even number of parts.
at Microsoft.Azure.Commands.Resources.Models.Authorization.AuthorizationClient.ValidateScope(String scope, Boolean allowEmpty)
at Microsoft.Azure.Commands.Resources.GetAzureRoleAssignmentCommand.ExecuteCmdlet()
at Microsoft.WindowsAzure.Commands.Utilities.Common.CmdletExtensions.<>c__3`1.b__3_0(T c)
at Microsoft.WindowsAzure.Commands.Utilities.Common.CmdletExtensions.ExecuteSynchronouslyOrAsJob[T](T cmdlet, Action`1 executor)
at Microsoft.WindowsAzure.Commands.Utilities.Common.CmdletExtensions.ExecuteSynchronouslyOrAsJob[T](T cmdlet)
at Microsoft.WindowsAzure.Commands.Utilities.Common.AzurePSCmdlet.ProcessRecord();
DEBUG: Finish sending metric.
DEBUG: 9:36:40 AM - GetAzureRoleAssignmentCommand end processing.
DEBUG: 9:36:40 AM - GetAzureRoleAssignmentCommand end processing.
DEBUG: 9:36:40 AM - GetAzureRoleAssignmentCommand begin processing with ParameterSet 'ResourceParameterSet'.
DEBUG: 9:36:40 AM - using account id 'my@email.com'...
DEBUG: [ADAL]: Information: 2019-08-08T16:36:40.8505336Z: 00000000-0000-0000-0000-000000000000 - LoggerBase.cs: Serializing token cache with 4 items.
```

## Error output

```
HistoryId: 157
Message : Scope '/subscriptions/mysubid/resourceGroups/myrg/providers/Microsoft.Compu
te/extensions/PowerBIReports/MicrosoftMonitoringAgent' should have even number of parts.
StackTrace : at Microsoft.Azure.Commands.Resources.Models.Authorization.AuthorizationClient.ValidateScope(String scope,
Boolean allowEmpty)
at Microsoft.Azure.Commands.Resources.GetAzureRoleAssignmentCommand.ExecuteCmdlet()
at Microsoft.WindowsAzure.Commands.Utilities.Common.AzurePSCmdlet.ProcessRecord()
Exception : System.ArgumentException
InvocationInfo : {Get-AzRoleAssignment}
Line : $assignments = Get-AzRoleAssignment -ResourceGroupName "myrg" -ResourceName
"PowerBIReports/MicrosoftMonitoringAgent" -ResourceType "Microsoft.Compute/virtualMachines/extensions"
-IncludeClassicAdministrators -DefaultProfile $context
Position : At line:1 char:16
+ ... signments = Get-AzRoleAssignment -ResourceGroupName "myrg" -Res ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 157
```