code: def set_outgoing(self, interface_id):
          
          self.interface.set_unset(interface_id, 'outgoing')
          self._engine.update()
docs: Specifies the IP address that the engine uses to initiate connections
          (such as for system communications and ping) through an interface
          that has no Node Dedicated IP Address. In clusters, you must select
          an interface that has an IP address defined for all nodes.
          Setting primary_mgt also sets the default outgoing address to the same
          interface.
          
          :param str,int interface_id: interface to set outgoing
          :raises InterfaceNotFound: specified interface is not found
          :raises UpdateElementFailed: failure to make modification
          :return: None