'Return whether the plugin supports multiple RPC workers.
A plugin that supports multiple RPC workers should override the
start_rpc_listeners method to ensure that this method returns True and
that start_rpc_listeners is called at the appropriate time.
Alternately, a plugin can override this method to customize detection
of support for multiple rpc workers
.. note:: this method is optional, as it was not part of the originally
defined plugin API.'

def rpc_workers_supported(self):

    return (self.__class__.start_rpc_listeners != NeutronPluginBaseV2.start_rpc_listeners)
