message: Limit TPU builds to testing serially.
diff: @@ -49,4 +49,5 @@ bazel test --config=opt \
  --test_arg=--tpu="${TPU_NAME}" \
  --test_arg=--zone="${TPU_ZONE}" \
  --test_arg=--test_dir_base="gs://kokoro-tpu-testing/tempdir/" \
  + --local_test_jobs=1 \
  -- //tensorflow/... -//tensorflow/compiler/... -//tensorflow/lite/...
  