Merge changes I64de4bb5,I765f4a82,I2f2054c6,I5fdc54d0,I5dc62758, ... into tm-dev

* changes:
  Csip: Add method for checking group lock status
  Csip: Add more means to get grouped devices
  BassClient: Allow only one pending source operation
  BassClient: Reconnect devices in the background
  BassClient: Fix using Metadata cache
  BassClient: Fix not sending connection change intent