Merge "Add FEATURE_REMOTE_GROUP_PLAYBACK" into rvc-dev am: c0fcd758c4 am: bc6f7b7b4f am: df06fd19f6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12043613

Change-Id: I8c8f735208daa66da67b07175212d32c7b888f3e