Error Supplying SkuName to Set-AzServiceBusNamespace

### Description

When calling Set-AzServiceBusNamespace with -SkuName, I receive the error:
```
A parameter cannot be found that matches parameter name 'SkuName'
At C:\Program
Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzServiceBusNamespace.ps1:180
char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Get-AzServiceBusNamespace], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : NamedParameterNotFound,Get-AzServiceBusNamespace
```

This appears to be caused because $PSBoundParameters.Remove is not being called for SkuName like it is for other parameters.

### Issue script & Debug output

```PowerShell
Set-AzServiceBusNamespace `
-Name `
-ResourceGroupName `
-SkuName Basic
```

### Environment data

```PowerShell
Name Value
---- -----
PSVersion 5.1.22621.3958
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.22621.3958
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
```

### Module versions

```PowerShell
ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Script 3.0.3 Az.Accounts {Add-AzEnvironment, Clear-AzConfig, Clear-AzContext, Clear...
Script 4.0.0 Az.ServiceBus {New-AzServiceBusAuthorizationRuleSASToken, Test-AzService..
```

### Error output

```PowerShell
DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].
DEBUG: 3:55:20 PM - ResolveError begin processing with ParameterSet 'AnyErrorParameterSet'.
DEBUG: 3:55:20 PM - using account id ''...
DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplayBreakingChangeWarning], Module = [], Cmdlet = [].
Returning default value [True].
DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 13

Message : A parameter cannot be found that matches parameter name 'SkuName'.
StackTrace : at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at Microsoft.PowerShell.Executor.ExecuteCommandHelper(Pipeline tempPipeline, Exception&
exceptionThrown, ExecutionOptions options)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Get-AzServiceBusNamespace}
Line : $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters

Position : At C:\Program Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzSer
viceBusNamespace.ps1:180 char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
HistoryId : 13

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 10

Message : A parameter cannot be found that matches parameter name 'SkuName'.
StackTrace : at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at Microsoft.PowerShell.Executor.ExecuteCommandHelper(Pipeline tempPipeline, Exception&
exceptionThrown, ExecutionOptions options)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Get-AzServiceBusNamespace}
Line : $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters

Position : At C:\Program Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzSer
viceBusNamespace.ps1:180 char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
HistoryId : 10

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 8

Message : A parameter cannot be found that matches parameter name 'SkuName'.
StackTrace : at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at Microsoft.PowerShell.Executor.ExecuteCommandHelper(Pipeline tempPipeline, Exception&
exceptionThrown, ExecutionOptions options)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Get-AzServiceBusNamespace}
Line : $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters

Position : At C:\Program Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzSer
viceBusNamespace.ps1:180 char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
HistoryId : 8

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 6

Message : A parameter cannot be found that matches parameter name 'SkuName'.
StackTrace : at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at Microsoft.PowerShell.Executor.ExecuteCommandHelper(Pipeline tempPipeline, Exception&
exceptionThrown, ExecutionOptions options)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Get-AzServiceBusNamespace}
Line : $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters

Position : At C:\Program Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzSer
viceBusNamespace.ps1:180 char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
HistoryId : 6

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 5

Message : A parameter cannot be found that matches parameter name 'SkuName'.
StackTrace : at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at Microsoft.PowerShell.Executor.ExecuteCommandHelper(Pipeline tempPipeline, Exception&
exceptionThrown, ExecutionOptions options)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Get-AzServiceBusNamespace}
Line : $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters

Position : At C:\Program Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzSer
viceBusNamespace.ps1:180 char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
HistoryId : 5

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 4

Message : Parameter cannot be processed because the parameter name 'Sku' is ambiguous. Possible matches
include: -SkuName -SkuCapacity.
StackTrace : at System.Management.Automation.MergedCommandParameterMetadata.GetMatchingParameter(String name,
Boolean throwOnParameterNotFound, Boolean tryExactMatching, InvocationInfo invocationInfo)
at System.Management.Automation.ParameterBinderController.ReparseUnboundArguments()
at System.Management.Automation.CmdletParameterBinderController.BindCommandLineParametersNoValidati
on(Collection`1 arguments)
at
System.Management.Automation.CmdletParameterBinderController.BindCommandLineParameters(Collection`1
arguments)
at System.Management.Automation.CommandProcessor.BindCommandLineParameters()
at System.Management.Automation.CommandProcessor.Prepare(IDictionary psDefaultParameterValues)
at System.Management.Automation.CommandProcessorBase.DoPrepare(IDictionary
psDefaultParameterValues)
at System.Management.Automation.Internal.PipelineProcessor.Start(Boolean incomingStream)
at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(Object
input)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(Object
input)
at System.Management.Automation.PipelineOps.InvokePipeline(Object input, Boolean ignoreInput,
CommandParameterInternal[][] pipeElements, CommandBaseAst[] pipeElementAsts, CommandRedirection[][]
commandRedirections, FunctionContext funcContext)
at System.Management.Automation.Interpreter.ActionCallInstruction`6.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame
frame)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Set-AzServiceBusNamespace}
Line : -Sku Basic
Position : At line:4 char:4
+ -Sku Basic
+ ~~~~
HistoryId : 4

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplaySecretsWarning], Module = [], Cmdlet = []. Returning
default value [True].

HistoryId: 3

Message : A parameter cannot be found that matches parameter name 'SkuName'.
StackTrace : at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at Microsoft.PowerShell.Executor.ExecuteCommandHelper(Pipeline tempPipeline, Exception&
exceptionThrown, ExecutionOptions options)
Exception : System.Management.Automation.ParameterBindingException
InvocationInfo : {Get-AzServiceBusNamespace}
Line : $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters

Position : At C:\Program Files\WindowsPowerShell\Modules\Az.ServiceBus\4.0.0\ServiceBus.Autorest\custom\Set-AzSer
viceBusNamespace.ps1:180 char:66
+ ... $serviceBusNamespace = Get-AzServiceBusNamespace @PSBoundParameters
+ ~~~~~~~~~~~~~~~~~~
HistoryId : 3

DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [DisplayRegionIdentified], Module = [], Cmdlet = []. Returning
default value [True].
DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [CheckForUpgrade], Module = [], Cmdlet = []. Returning default
value [True].
DEBUG: AzureQoSEvent: Module: Az.Accounts:3.0.3; CommandName: Resolve-AzError; PSVersion: 5.1.22621.3958; IsSuccess:
True; Duration: 00:00:00.0943703; SanitizeDuration: 00:00:00.0057296
DEBUG: 3:55:20 PM - [ConfigManager] Got nothing from [EnableDataCollection], Module = [], Cmdlet = []. Returning
default value [True].
DEBUG: 3:55:20 PM - ResolveError end processing.
```

Start in ServiceBus.Autorest/custom/Set-AzServiceBusNamespace.ps1 at line 180, where $PSBoundParameters is splatted into Get-AzServiceBusNamespace, and compare the handling of SkuName with the other parameters. Re-run the supplied Set-AzServiceBusNamespace command with -SkuName Basic; done means it no longer passes SkuName to Get-AzServiceBusNamespace and the namespace update proceeds without the reported binding error.

Written by the indexing model from the issue text.