Warn users for upcoming changes to test cmdlets

src/ResourceManager/ResourceManager/Commands.ResourceManager/Cmdlets/Implementation/TestAzureResourceCmdlet.cs

@@ -131,6 +131,7 @@ protected override void OnProcessRecord()
         /// </summary>
         private void RunCmdlet()
         {
+            this.WriteWarning("The Test-AzureResource cmdlet is being deprecated and will be removed in a future release.");
             this.WriteObject(this.TestResource());
         }
 

src/ResourceManager/ResourceManager/Commands.ResourceManager/Cmdlets/Implementation/TestAzureResourceGroupCmdlet.cs

@@ -57,6 +57,7 @@ protected override void OnProcessRecord()
         /// </summary>
         private void RunCmdlet()
         {
+            this.WriteWarning("The Test-AzureResourceGroup cmdlet is being deprecated and will be removed in a future release.");
             this.WriteObject(this.TestResourceGroup());
         }
 

src/ResourceManager/Resources/Commands.Resources/Templates/TestAzureResourceGroupTemplateCommand.cs

@@ -40,6 +40,7 @@ public TestAzureResourceGroupTemplateCommand()
 
         public override void ExecuteCmdlet()
         {
+            this.WriteWarning("The Test-AzureResourceGroupTemplate cmdlet is being renamed to Test-AzureResourceGroupDeployment in a future release.");
             ValidatePSResourceGroupDeploymentParameters parameters = new ValidatePSResourceGroupDeploymentParameters()
             {
                 ResourceGroupName = ResourceGroupName,