[automerger skipped] Merge "DO NOT MERGE: Bump CTS and CTS Verifier version to 8.1_r23" into oreo-mr1-cts-dev am: ef72ac0cad -s ours

am skip reason: subject contains skip directive

Original change: https://android-review.googlesource.com/c/platform/cts/+/1550325

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Idede08b8c8c95e179c1c5bf65632f3e6d2e4a775