Merge pull request #4821 from MabOneSdk/NullSAFix

Get-AzureRmStorageAccount test helper should return $null when SA doesn't exist

Author: cormacpayne

src/ResourceManager/Common/Commands.ScenarioTests.ResourceManager.Common/AzureRM.Storage.ps1

@@ -21,9 +21,13 @@ function Get-AzureRmStorageAccount
         $getTask = $client.StorageAccounts.GetPropertiesAsync($ResourceGroupName, $name, [System.Threading.CancellationToken]::None)
     }
     $sa = $getTask.Result
-	$id = "/subscriptions/" + $context.Subscription.Id + "/resourceGroups/"+ $ResourceGroupName + "/providers/Microsoft.Storage/storageAccounts/" + $Name	  
-    $account = Get-StorageAccount $ResourceGroupName $Name $id
-    Write-Output $account
+
+	if($sa -ne $null)
+	{
+		$id = "/subscriptions/" + $context.Subscription.Id + "/resourceGroups/"+ $ResourceGroupName + "/providers/Microsoft.Storage/storageAccounts/" + $Name	  
+		$account = Get-StorageAccount $ResourceGroupName $Name $id
+		Write-Output $account 
+	}
   }
   END {}