message: Define .value() on DistributedVariable
diff: @@ -562,6 +562,9 @@ class DistributedVariable(DistributedDelegate):
  def read_value(self):
  return self._distribute_strategy.extended.read_var(self)
  + def value(self):
  + return self._get_closest().value()
  +
  def _should_act_as_resource_variable(self):
  """Pass resource_variable_ops.is_resource_variable check."""
  pass
  