Update dummy model to verify the URI object

Author: justinyoo

samples/Aliencube.AzureFunctions.FunctionApp.Models/DummyStringModel.cs

@@ -1,7 +1,11 @@
+using System;
+
 namespace Aliencube.AzureFunctions.FunctionApp.Models
 {
     public class DummyStringModel
     {
         public string StringValue { get; set; }
+
+        public Uri UriValue { get; set; }
     }
 }