Added zrpc server custom serverID for custom registration Key when the service is registered on ETCD. (#3008)

zrpc/internal/rpcpubserver.go

@@ -26,6 +26,9 @@ func NewRpcPubServer(etcd discov.EtcdConf, listenOn string, middlewares ServerMi
 			pubOpts = append(pubOpts, discov.WithPubEtcdTLS(etcd.CertFile, etcd.CertKeyFile,
 				etcd.CACertFile, etcd.InsecureSkipVerify))
 		}
+		if etcd.HasServerID() {
+			pubOpts = append(pubOpts, discov.WithId(etcd.ServerID))
+		}
 		pubClient := discov.NewPublisher(etcd.Hosts, etcd.Key, pubListenOn, pubOpts...)
 		return pubClient.KeepAlive()
 	}