Merge "floss: Add sigterm handler" am: 6161a2d2 am: 97e133de am: 036da423

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2229494



Change-Id: I801050ca1e6a871e78e3d9451771a0f0a7b35bbe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>