address comments

Author: azdevxps

src/ResourceManager/Resources/Commands.Resources.Test/ScenarioTests/ProviderTests.ps1

@@ -82,7 +82,7 @@ function Test-AzureProvider-WithZoneMappings
 function Test-AzureProviderOperation
 {
     # Get all operations by all providers
-    $allActions = Get-AzureRmProviderOperation *
+    $allActions = Get-AzureRmProviderOperation
 	Assert-True { $allActions.Length -gt 0 }
 
 	# Get all operations of microsoft.insights provider

src/ResourceManager/Resources/Commands.Resources/Providers/GetAzureProviderOperationCmdlet.cs

@@ -40,18 +40,13 @@ public class GetAzureProviderOperationCommand : ResourcesBaseCmdlet
         [Parameter(Position = 0, Mandatory = false, ValueFromPipelineByPropertyName = false, ValueFromPipeline = true, HelpMessage = "The action string.")]
         [Alias("Name")]
         [ValidateNotNullOrEmpty]
-        public string OperationSearchString { get; set; }
+        public string OperationSearchString { get; set; } = "*";
 
         /// <summary>
         /// Executes the cmdlet
         /// </summary>
         public override void ExecuteCmdlet()
         {
-            if (OperationSearchString == null)
-            {
-                OperationSearchString = "*";
-            }
-
             // remove leading and trailing whitespaces
             this.OperationSearchString = this.OperationSearchString.Trim();