message: Temporarily blacklist keras model_coverage_lib_tests from TF2 testing
  This target appears to have never been executed under TF2 conditions,
  and the Keras-specific tests are now failing.
diff: @@ -31,6 +31,7 @@ from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  +from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
  @@ -178,18 +179,21 @@ class EvaluateKerasModel(test.TestCase):
  os.close(fd)
  return keras_file
  + @test_util.run_v1_only('Keras test fails under v2, see b/157266669')
  def testFloat(self):
  model = self._getSingleInputKerasModel()
  keras_file = self._saveKerasModel(model)
  model_coverage.test_keras_model(keras_file)
  + @test_util.run_v1_only('Keras test fails under v2, see b/157266669')
  def testPostTrainingQuantize(self):
  model = self._getSingleInputKerasModel()
  keras_file = self._saveKerasModel(model)
  model_coverage.test_keras_model(keras_file, post_training_quantize=True)
  + @test_util.run_v1_only('Keras test fails under v2, see b/157266669')
  def testTargetOps(self):
  model = self._getSingleInputKerasModel()
  keras_file = self._saveKerasModel(model)
  