message: Add start/end timestamps
diff: @@ -117,6 +117,8 @@ while [[ $# -gt 0 ]] ; do
  esac
  done
  +shw_grey "================================================"
  +shw_grey " START_TIMESTAMP='$(date +%Y-%m-%dT%H:%M:%S%z)'"
  shw_grey "================================================"
  shw_grey " DESTINATION_CLUSTER=$DESTINATION_CLUSTER"
  shw_grey " REPLICA_CLUSTER=$REPLICA_CLUSTER"
  @@ -249,5 +251,8 @@ if [ "$DB_READREPLICA_HOSTS" ]; then
  fi
  echo ""
  +shw_grey "================================================"
  +shw_grey " END_TIMESTAMP='$(date +%Y-%m-%dT%H:%M:%S%z)'"
  +shw_grey "================================================"
  shw_norm "Done"
  exit 0
  