'Reverts one or more parameters to their default values.
:param str params: configuration option to be reset
:raises:
* :class:`stem.ControllerError` if the call fails
* :class:`stem.InvalidArguments` if configuration options requested was invalid
* :class:`stem.InvalidRequest` if the configuration setting is
impossible or if there\'s a syntax error in the configuration values'

def reset_conf(self, *params):

    self.set_options(dict([(entry, None) for entry in params]), True)
