message: Add KubernetesClusterResolver and TFConfigClusterResolver to base init file
diff: @@ -24,7 +24,9 @@ from tensorflow.contrib.cluster_resolver.python.training.cluster_resolver import
  from tensorflow.contrib.cluster_resolver.python.training.cluster_resolver import SimpleClusterResolver
  from tensorflow.contrib.cluster_resolver.python.training.cluster_resolver import UnionClusterResolver
  from tensorflow.contrib.cluster_resolver.python.training.gce_cluster_resolver import GceClusterResolver
  +from tensorflow.contrib.cluster_resolver.python.training.kubernetes_cluster_resolver import KubernetesClusterResolver
  from tensorflow.contrib.cluster_resolver.python.training.slurm_cluster_resolver import SlurmClusterResolver
  +from tensorflow.contrib.cluster_resolver.python.training.tfconfig_cluster_resolver import TFConfigClusterResolver
  from tensorflow.contrib.cluster_resolver.python.training.tpu_cluster_resolver import TPUClusterResolver
  # pylint: enable=wildcard-import,unused-import
  @@ -35,6 +37,8 @@ _allowed_symbols = [
  'SimpleClusterResolver',
  'UnionClusterResolver',
  'GceClusterResolver',
  + 'KubernetesClusterResolver',
  + 'TFConfigClusterResolver',
  'TPUClusterResolver',
  'SlurmClusterResolver',
  ]
  