message: [CT] write test output log to tempfile
  Write test output log to a tempfile if no file is specificied.
  Closes:
  Approved by: metajack
diff: @@ -90,7 +90,7 @@ if [ -z "$TAG" ]; then
  echo "**TIP Use cti -T $TAG <...> to restart this run with same tag without rebuilding it"
  fi
  -OUTPUT_TEE=$(mktemp)
  +OUTPUT_TEE=${CTI_OUTPUT_LOG:-$(mktemp)}
  echo "**********"
  echo "Copy of this output: $OUTPUT_TEE"
  