3节点下，部分节点中应用addrs地址错误

[slsycl]

部署情况：
单节点多实例不是，192.168.115.242:7171,192.168.115.242:7172,192.168.115.242:7173
注册情况：
ins := &naming.Instance{
Zone: "001",
Env: "prod",
AppID: "app01",
Version: "b",
Addrs: []string{
"http://192.168.115.242:8001",
"grpc://192.168.115.242:9001",
},
LastTs: time.Now().Unix(),
Metadata: map[string]string{
"color":"qa",
"weight":"10",
},
}
问题：

部分节点将 "addrs": ["http://192.168.115.242:8001","grpc://192.168.115.242:9001"]变成了 "addrs": ["http://192.168.115.242:8001,grpc://192.168.115.242:9001"]