'delete dfg group'

def delete_dfs_group(self):

    conf_str = (CE_NC_DELETE_DFS_GROUP_INFO_HEADER % self.dfs_group_id)
    conf_str += CE_NC_DELETE_DFS_GROUP_INFO_TAIL
    recv_xml = set_nc_config(self.module, conf_str)
    if ('<ok/>' not in recv_xml):
        self.module.fail_json(msg='Error:    Delete    DFS    group    id    failed.')
    self.updates_cmd.append('undo    dfs-group    1')
    self.changed = True
