message: Disable tests that are failing on Cloud TPU.
diff: @@ -310,7 +310,8 @@ class TPUStrategyTest(test.TestCase):
  bar(1)
  - def test_using_external_variable_inside_tf_function(self):
  + # TODO(b/152251070): Re-enable once modified to work on Cloud TPU.
  + def disable_test_using_external_variable_inside_tf_function(self):
  strategy = get_tpu_strategy()
  dataset = dataset_ops.Dataset.range(10, output_type=dtypes.float32).batch(2)
  input_iterator = iter(strategy.experimental_distribute_dataset(dataset))
  @@ -329,7 +330,8 @@ class TPUStrategyTest(test.TestCase):
  expected_result,
  strategy.experimental_local_results(train_step(next(input_iterator))))
  - def test_keras_metric_outside_strategy_scope_per_replica(self):
  + # TODO(b/152251070): Re-enable once modified to work on Cloud TPU.
  + def disable_test_keras_metric_outside_strategy_scope_per_replica(self):
  strategy = get_tpu_strategy()
  metric = keras.metrics.Mean("test_metric", dtype=dtypes.float32)
  