Make ContentSuggestionsManager and AppPredictionsManager tests pass Make the tests pass when the required service is missing. The RequiredServiceRule has to be used with @Rule, not @ClassRule. Test: ran atest CtsAppPredictionServiceTestCases and atest CtsContentSuggestionsTestCases Bug: 152371090 Bug: 152264636 Bug: 152589083 Bug: 147850104 Bug: 144676375 Change-Id: Id567d6420eefa499fc8c1412dc96c4763e94478b