[Persistence] Add placeholder specs

Add empty specs for new scripts introduced to support revision
checking and Overwrite/Discard dialog, WTD-1033.

platform/core/test/models/CachingModelDecoratorSpec.js

@@ -0,0 +1,11 @@
+/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/
+
+define(
+    ["../../src/models/CachingModelDecorator"],
+    function (CachingModelDecorator) {
+        "use strict";
+
+        describe("The caching model decorator", function () {
+        });
+    }
+);