message: [LBT][compat] propogate validator image rename
  Closes:
diff: # adapted from --build-all-cti option from libra/docker/build-aws.sh, which is how
  # land blocking test builds images before running cluster-test
  -REPOS=(libra_validator libra_cluster_test libra_init libra_safety_rules)
  +REPOS=(libra/validator libra_cluster_test libra_init libra_safety_rules)
  # the number of commits backwards we want to look
  END=50
  