message: Add ClusterResolver symbols to the TF 2 upgrade tool.
diff: @@ -69,6 +69,22 @@ manual_symbol_renames = {
  "tf.io.gfile.stat",
  "tf.gfile.Walk":
  "tf.io.gfile.walk",
  + "tf.contrib.cluster_resolver.ClusterResolver":
  + "tf.distribute.cluster_resolver.ClusterResolver",
  + "tf.contrib.cluster_resolver.GceClusterResolver":
  + "tf.distribute.cluster_resolver.GCEClusterResolver",
  + "tf.contrib.cluster_resolver.KubernetesClusterResolver":
  + "tf.distribute.cluster_resolver.KubernetesClusterResolver",
  + "tf.contrib.cluster_resolver.SimpleClusterResolver":
  + "tf.distribute.cluster_resolver.SimpleClusterResolver",
  + "tf.contrib.cluster_resolver.SlurmClusterResolver":
  + "tf.distribute.cluster_resolver.SlurmClusterResolver",
  + "tf.contrib.cluster_resolver.TFConfigClusterResolver":
  + "tf.distribute.cluster_resolver.TFConfigClusterResolver",
  + "tf.contrib.cluster_resolver.TPUClusterResolver":
  + "tf.distribute.cluster_resolver.TPUClusterResolver",
  + "tf.contrib.cluster_resolver.UnionClusterResolver":
  + "tf.distribute.cluster_resolver.UnionClusterResolver",
  "tf.contrib.data.AUTOTUNE":
  "tf.data.experimental.AUTOTUNE",
  "tf.contrib.data.Counter":
  