Merge "Merge "DO NOT MERGE: Bump CTS and CTS Verifier to 6.0_r15" into marshmallow-cts-dev am: 1d8c12aa80  -s ours am: 7f203e5d1f  -s ours" into nougat-mr1-cts-dev
am: 342133f9b7  -s ours

Change-Id: Iae7192f0f5cb36cc997f1044ecc8638dac869da3