'Rollback saved checkpoints.
:param int rollback: Number of checkpoints to revert
:raises .errors.PluginError: If there is a problem with the input or
the function is unable to correctly revert the configuration'

def rollback_checkpoints(self, rollback=1):

    try:
        self.reverter.rollback_checkpoints(rollback)
    except errors.ReverterError as err:
        raise errors.PluginError(str(err))
    self.aug.load()
