Define GmsTest interface for GTS test case annotation. am: 6dc42c4792

Original change: https://googleplex-android-review.googlesource.com/c/platform/test/suite_harness/+/12563671

Change-Id: I338ecad2d23574c3faa2eb10435e54f055419b3d
tree: 76b9b43501e88ee72c83ae3194736c46e6e3eec6
  1. build/
  2. common/
  3. tools/
  4. OWNERS
  5. PREUPLOAD.cfg
  6. test_defs.sh