[automerger] RESTRICT AUTOMERGE: WifiServiceImpl: fix and add tethering checks am: 38598d8d32

Change-Id: I82c87c55dfdff926f9d0ec9068208837e001e0ee
tree: 8d800fb71c072b2ccf16d9d511cce030fb737342
  1. service/
  2. tests/