Fix the issue of New-AzureRmDisk, New-AzureRmSnapshot, Update-AzureRm…

[hyonholee]

…Disk and Update-AzureRmSnapshot.

Description

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[NeilBird]

I have experienced issues with the New-AzureRmSnapshot cmd-let, giving the following error:

New-AzureRmSnapshot : The request content was invalid and could not be deserialized: 'Could not find member 'AccountType' on object of type 'ResourceDefinition'. Path 'AccountType', line 2, position 17.'.
ErrorCode: InvalidRequestContent

ErrorMessage: The request content was invalid and could not be deserialized: 'Could not find member 'AccountType' on object of type 'ResourceDefinition'. Path 'AccountType', line 2, position 17.'.
StatusCode: 400
ReasonPhrase: Bad Request
OperationID : f4c63d19-bd1c-4d5a-a9ae-03df6b1358ac

Will this commit resolve this issue? Or should I submit an new issue. Happy to provide more details / context if required.
Regards
Neil

[hyonholee]

@NeilBird This RP will resolve the issue.

[markcowl]

On demand run here: http://azuresdkci.cloudapp.net/view/1-AzurePowerShell/job/powershell-demand/1747/