481 (#489)

* add exception for proxy resources, fix error msg

* fix for 481

Author: bmoore-msft

arm-ttk/testcases/deploymentTemplate/Template-Should-Not-Contain-Blanks.test.ps1

@@ -45,7 +45,8 @@ $PropertiesThatCanBeEmpty = 'resources',
                             'inputs', # Microsoft.Portal/dashboard
                             'notEquals', # Microsoft.Authorization/policyDefinitions policyRule'
                             'clientId', # Microsoft.ContainerService/managedClusters.properties.servicePrincipalProfile
-                            'allowedCallerIpAddresses' # Microsoft.Logic/workflows Access Control
+                            'allowedCallerIpAddresses', # Microsoft.Logic/workflows Access Control
+                            'workerPools' # Microsoft.Web/hostingEnvironments
 
 if ($emptyItems) {
     foreach ($emptyItem in $emptyItems) {