Set-AzureRmDataFactoryV2LinkedService : HTTP Status Code: BadRequest

Hi all,

When I would to deploy a Azure Data Lake Gen2 Linkedservice via powershell, i get this error:
```
Set-AzureRmDataFactoryV2LinkedService : HTTP Status Code: BadRequest
Error Code: BadRequest
Error Message: Failed to encrypt sub-resource payload {
"Id": "/subscriptions/448f5935-d30a-4dac-98ef-fc1f2c2b264c/resourceGroups/TrialDS/providers/Microsoft.DataFactory/factories/TrialDS-Factory2/linkedservi
ces/LinkedServiceCuratedWikiData",
"Name": "LinkedServiceCuratedWikiData",
"Properties": {
"type": "LinkedService",
"typeProperties": {
"url": "********************"
},
"annotations": []
}
} and error is: Invalid type 'LinkedService' is provided in 'linkedServices'. Please correct the type in payload and retry..
Request Id: fe6d2d14-ae5a-41b9-a284-2dec89d78927
Timestamp (Utc):02/07/2020 15:38:03
At line:1 char:1
+ Set-AzureRmDataFactoryV2LinkedService -ResourceGroupName "TrialDS" -D ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : CloseError: (:) [Set-AzureRmDataFactoryV2LinkedService], ErrorResponseException
+ FullyQualifiedErrorId : Microsoft.Azure.Commands.DataFactoryV2.SetAzureDataFactoryLinkedServiceCommand
```

My line in powershell (copied from the tutorial):
`Set-AzureRmDataFactoryV2LinkedService -ResourceGroupName "TrialDS" -DataFactoryName "TrialDS-Factory2" -Name "LinkedServiceCuratedWikiData" -File "C:\\Users\\\\Desktop\\ADF Deployment\\linkedservice\\datalake.json" | Format-List`

But I follow this tutorial:
https://docs.microsoft.com/en-us/powershell/module/azurerm.datafactories/set-azurermdatafactoryv2linkedservice?view=azurermps-4.4.1

And use the JSON of my current working ADF:
```
{
"name": "datalake",
"type": "Microsoft.DataFactory/factories/linkedservices",
"properties": {
"type": "AzureBlobFS",
"typeProperties": {
"url": "https://.dfs.core.windows.net"
},
"annotations": []
}
}
```

Start by reproducing Set-AzureRmDataFactoryV2LinkedService with the supplied datalake.json and compare the payload against the linked-service schema in the referenced tutorial. The work is done when the Azure Data Lake Gen2 linked service deploys successfully without the BadRequest or invalid 'LinkedService' type error.

Written by the indexing model from the issue text.