re-add 5.0PP as a valid wmfversion value but remove it from documentation

Author: eshaparmar

src/ResourceManager/Compute/Commands.Compute/Extension/DSC/SetAzureVMDscExtensionCommand.cs

@@ -206,7 +206,7 @@ public class SetAzureVMDscExtensionCommand : VirtualMachineExtensionBaseCmdlet
         /// The default value is "latest"
         /// </summary>
         [Parameter(ValueFromPipelineByPropertyName = true)]
-        [ValidateSetAttribute(new[] { "4.0", "latest", "5.0" })]
+        [ValidateSetAttribute(new[] { "4.0", "latest", "5.0PP", "5.0" })]
         public string WmfVersion { get; set; }
 
         /// <summary>

src/ServiceManagement/Compute/Commands.ServiceManagement/IaaS/Extensions/DSC/SetAzureVMDscExtension.cs

@@ -154,7 +154,7 @@ public class SetAzureVMDscExtension : VirtualMachineExtensionCmdletBase
         /// The default value is "latest"
         /// </summary>
         [Parameter(ValueFromPipelineByPropertyName = true)]
-        [ValidateSetAttribute(new[] { "4.0", "latest", "5.0" })]
+        [ValidateSetAttribute(new[] { "4.0", "latest", "5.0PP", "5.0" })]
         public string WmfVersion { get; set; }
 
         /// <summary>