在做基于k8s的有状态集群部署zookeeper，然后后台文件系统选用的clusterfs，
部署完之后发现zk启动失败，hosts文件中只有自己docker节点的域名，然后报错是无法解析其余两台zk主机的域名
2018-04-02 11:31:07,916 [myid:] - WARN [main:QuorumPeer$QuorumServer@173] - Failed to resolve address: zk-2.zk-hs.default.svc.cluster.local.
java.net.UnknownHostException: zk-2.zk-hs.default.svc.cluster.local.: Name or service not known
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
server.1=zk-0.zk-hs.default.svc.cluster.local.:2888:3888
server.2=zk-1.zk-hs.default.svc.cluster.local.:2888:3888
server.3=zk-2.zk-hs.default.svc.cluster.local.:2888:3888
