Merge "Add FEATURE_REMOTE_GROUP_PLAYBACK" into rvc-dev am: c0fcd758c4 am: be48f1591e am: ae18f3f770

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

Change-Id: I8e1602d12b1b98742c4ecddf5354ec1ae371ded3