Merge "HFPClient: Support HF Indicators" am: bd03687d2e am: 6213623b11

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Bluetooth/+/1536565

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie05ca0dd24d66377b67d1a4fc4f96d56ffcd497c