Code review comment for lp://staging/~toykeeper/ubuntu-power-tests/music-video-lowpower-statistics

This MP obsoletes an earlier one which never finished merging: https://code.launchpad.net/~toykeeper/ubuntu-power-tests/add-music-video-tests/+merge/266043

The missing debian directory is still an open issue; I'm not sure how much of that adt needs and how much CI needs, so I haven't resolved it yet. I'd prefer to avoid duplicating that information if possible. With the adt tests in the proper debian directory, adt was pushing *way* too much data to the device under test, and actually causing the tests to time out or otherwise fail. So, those need to be somewhere else. This makes the packaging a bit awkward.