@Test
  public void invalidJsonPassed() throws Exception {
    assertTrue(
        "An instance of " + ShowAllLinksVisibilityController.class.getSimpleName() + " should have been returned",
        QuickLinkVisibilityControllerFactory.get("Hello world!") instanceof ShowAllLinksVisibilityController);
  }
If receives an invalid json as quick profile string, the factory should return an instance of {@link ShowAllLinksVisibilityController}
to mimic legacy behavior.
ambari-server/src/test/java/org/apache/ambari/server/state/quicklinksprofile/QuickLinkVisibilityControllerFactoryTest.java