Enable AzureRT scenario tests to run on non-AzureRT subscription (#1431)
Merge branch 'dev' of https://github.com/AzureRT/azure-sdk-tools into dev
Merge branch 'dev' of https://github.com/AzureRT/azure-sdk-tools into dev

Conflicts:
	WindowsAzurePowershell/src/Management.ServiceManagement.Test/FunctionalTests/CredentialHelper.cs
	WindowsAzurePowershell/src/Management.ServiceManagement.Test/FunctionalTests/ServiceManagementTest.cs