Merge "adb: retry connecting disconnected emulators instead of always looping." am: 50e91fec0e
am: cfb0c5cd91

* commit 'cfb0c5cd913b689c8f9d0d930c92c6a0804e2995':
  adb: retry connecting disconnected emulators instead of always looping.

Change-Id: I4b7f30bd3738ce53eb343e5d0e20f3d20faf7e2a