message: Fix training_test by using AssertIs
diff: @@ -1443,8 +1443,8 @@ class TrainingTest(keras_parameterized.TestCase):
  else:
  expected_training_arg = keras.backend.symbolic_learning_phase()
  - self.assertEqual(model.training, expected_training_arg)
  - self.assertEqual(model.l1.training, expected_training_arg)
  + self.assertIs(model.training, expected_training_arg)
  + self.assertIs(model.l1.training, expected_training_arg)
  @keras_parameterized.run_all_keras_modes
  def test_error_when_model_is_not_compiled(self):
  