message: Expand an error message with a known workaround; add flag to enable said workaround.
diff: @@ -1359,6 +1359,11 @@ class BaseSession(SessionInterface):
  except KeyError:
  pass
  message = error_interpolation.interpolate(message, self._graph)
  + if 'only supports NHWC tensor format' in message:
  + message += ('\nA possible workaround: Try disabling Grappler optimizer'
  + '\nby modifying the config for creating the session eg.'
  + '\nsession_config.graph_options.rewrite_options.'
  + 'disable_meta_optimizer = True')
  raise type(e)(node_def, op, message)
  def _extend_graph(self):
  