[automerger skipped] Send tethered interface callbacks based on interface existence. am: a45861dd67 -s ours am: 11def060e8 -s ours

am skip reason: Change-Id I015219cbd03626c38fb5156d0cb2991ba7d7def7 with SHA-1 a45861dd67 is in history

Change-Id: I799d401c9dbb64031ee0601bfbb869588c2843dc
tree: 383b74744be1be63e8bd7e62b7fb70b52491a1a5
  1. service-t/
  2. tests/