进入nova 数据库中，重置虚拟机状态
update instances set task_state = NULL,vm_state = 'stopped', power_state = 4 where deleted = 0 and hostname ='iServerTest13-801c7814-72b9-412a-9943-8d17f4368fec' and uuid ='801c7814-72b9-412a-9943-8d17f4368fec'
参考地址：https://blog.csdn.net/chinagissoft/article/details/50286513