Handle the "Reason" tag in ResultHandler am: f3a49755b2

Original change: https://googleplex-android-review.googlesource.com/c/platform/test/suite_harness/+/12798063

Change-Id: I9f8f4fbb56ad27d167850b17d3a50eb2d12bcb0f
tree: 46b8b485fde568432a2201ac874d20d3110f3f8c
  1. build/
  2. common/
  3. tools/
  4. OWNERS
  5. PREUPLOAD.cfg
  6. test_defs.sh