Merge pull request Azure#1504 from ClogenyTechnologies/nim/arm_set-azurevmchefextension

Set-AzureVMChefExtension command in ARM

Author: stankovski

src/ResourceManager/Compute/Commands.Compute/Common/ConstantStringTypes.cs

@@ -87,6 +87,7 @@ public static class ProfileNouns
         public const string VirtualMachineExtensionImage = "AzureRmVMExtensionImage";
         public const string VirtualMachineExtensionImageVersion = "AzureRmVMExtensionImageVersion";
         public const string VirtualMachineExtensionImageType = "AzureRmVMExtensionImageType";
+        public const string VirtualMachineChefExtension = "AzureRmVMChefExtension";
 
         public const string AvailabilitySet = "AzureRmAvailabilitySet";
         public const string VirtualMachineConfig = "AzureRmVMConfig";