Merge "Floss: Add gatt client commands in btclient" am: 81e7fc4e am: 28916a35

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2184582



Change-Id: Ifb53dc0a1390094d16d6bcb04b16da85646a0b95
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>