Merge changes I5ffb1399,I2333765e,I64ca4e29,I6f393150 into lmp-sprout-dev

* changes:
  media: centralize signaling of skipped tests
  media: update MediaCodecList handling to API 21
  cts: add tests to validate decoding profiles defined by CDD.
  cts: validate h264 and h265 codec profiles and level requirements.