Add Test annotation to overridden @Ignored methods

Because of JUnit's reflection based model if the overridden method does not have an @Test method then it does not consider any of it's annotation since that overridden method is not considered a test but still runs because the parent is annotated with @Test so when it's called, the overridden method does get called and runs but is not ignored

Test: atest FlickerLibTest
Change-Id: Iecd2ad71f4590260856e2667bdf3a9979af2d3ce