Add LocationCompleter to ServiceBus cmdlets

Author: azdevxps

src/ResourceManager/ServiceBus/Commands.ServiceBus/Cmdlets/Namespace/NewAzureServiceBusNamespace.cs

@@ -48,6 +48,7 @@ public class NewAzureRmServiceBusNamespace : AzureServiceBusCmdletBase
             ValueFromPipelineByPropertyName = true,
             Position = 1,
             HelpMessage = "ServiceBus Namespace Location.")]
+        [LocationCompleter("Microsoft.ServiceBus/namespaces")]
         [ValidateNotNullOrEmpty]
         public string Location { get; set; }
 

src/ResourceManager/ServiceBus/Commands.ServiceBus/Cmdlets/Namespace/SetAzureServiceBusNamespace.cs

@@ -47,6 +47,7 @@ public class SetAzureRmServiceBusNamespace : AzureServiceBusCmdletBase
             ValueFromPipelineByPropertyName = true,
             Position = 1,
             HelpMessage = "ServiceBus Namespace Location.")]
+        [LocationCompleter("Microsoft.ServiceBus/namespaces")]
         [ValidateNotNullOrEmpty]
         public string Location { get; set; }