Merge "Remove scenario/power.xml to put it in vendor/." am: 9cb5766595 am: d4a56f409a am: 3b838324a8

Original change: https://android-review.googlesource.com/c/platform/tools/tradefederation/contrib/+/1429092

Change-Id: I68fc48de0101f5e9986096fb9b76eb9b0cba4d86