Merge "DO NOT MERGE ANYWHERE: bumping CTS 5.1 to R4" into lollipop-mr1-cts-dev am: 0e8212053b  -s ours am: 2a72b1b08e  -s ours am: c1f6baf9ec  -s ours am: ba72ac87a7  -s ours
am: e9e56b476b  -s ours

* commit 'e9e56b476b38562f3096ddf8b2072396b0e6fc5e':
  DO NOT MERGE ANYWHERE: bumping CTS 5.1 to R4