Merge "Merge "DO NOT MERGE: Bump CTS and CTS Verifier to 6.0_r15" into marshmallow-cts-dev am: 1d8c12aa80  -s ours" into nougat-cts-dev am: 021fddf3fe  -s ours am: adb60043f2
am: dc5fb92ce6

Change-Id: I439f3ba88e4fbf86e953a0e6ce9a9cf4a9f30596