message: Actually fix TPU nightly build script.
  $TPU_NAME and $TPU_ZONE aren't set until after ctpu_up is run.
diff: @@ -35,6 +35,7 @@ export TF2_BEHAVIOR=1
  yes "" | "$PYTHON_BIN_PATH" configure.py
  +test_patterns=(//tensorflow/... -//tensorflow/compiler/... -//tensorflow/lite/...)
  tag_filters="tpu,-no_tpu,-notpu,-no_oss,-no_oss_py37"
  bazel_args=(
  @@ -45,14 +46,18 @@ bazel_args=(
  --noincompatible_strict_action_env \
  --build_tag_filters="${tag_filters}" \
  --test_tag_filters="${tag_filters}" \
  - --test_output=errors --verbose_failures=true --keep_going \
  + --test_output=errors --verbose_failures=true --keep_going
  +)
  +
  +bazel build "${bazel_args[@]}" -- "${test_patterns[@]}"
  +
  +ctpu_up -s v2-8 -p tensorflow-testing-tpu
  +
  +test_args=(
  --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/...
  + --local_test_jobs=1
  )
  -bazel build "${bazel_args[@]}"
  -ctpu_up -s v2-8 -p tensorflow-testing-tpu
  -bazel test "${bazel_args[@]}"
  +bazel test "${bazel_args[@]}" "${test_args[@]}" -- "${test_patterns[@]}"
  