Merge branch 'master' of http://git.yoho.cn/ops/monitor-service

@@ -73,7 +73,8 @@ public class HostGroupServiceImpl implements IHostGroupService {
 
     @Override
     public BaseResponse<Integer> delHostGroupById(int id) {
-        List<HostInfo> list = hostInfoMapper.selectHostInfosByTag("");
+        HostGroup hostGroup=hostGroupMapper.selectByPrimaryKey(id);
+        List<HostInfo> list = hostInfoMapper.selectHostInfosByTag(hostGroup.getGroupName());
         if(list != null && list.size() > 0){
             return new BaseResponse<Integer>("有主机绑定此机组，请先删除主机信息");
         }else{