message: chore: fix travis fold
diff: @@ -90,7 +90,7 @@ fold_start "integration"
  # We'll create PR for develop and rc branches to trigger the integration test.
  if [ "$RUN_INTEGRATION" = true ]; then
  echo "Running integration test..."
  - fold integration make integration
  + make integration
  # Switch to release mode when the running time is much longer than the build time.
  # make integration-release
  