Merge "Added setAlwaysOn feature" am: 66e56014df am: 0eda082f6a

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1477323

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I16b13b49d5b4b5b7c0d6f63893c552a9c0734c07