[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: 70cd69c51b -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: Ic530e6e93828de427da4d760fedac4e750d6efe3