优化etcd发现服务，支持记录附加信息rpc

service/service.go

@@ -77,6 +77,17 @@ type DiscoveryServiceEvent struct{
 	NodeId string
 }
 
+type EtcdServiceRecordEvent struct {
+	NetworkName string
+	TTLSecond int64
+	RecordKey string
+	RecordInfo string
+}
+
+type Empty struct {
+
+}
+
 func SetMaxServiceChannel(maxEventChannel int){
 	maxServiceEventChannelNum = maxEventChannel
 }
@@ -410,4 +421,4 @@ func (s *Service) SetGoRoutineNum(goroutineNum int32) bool {
 }
 
 func (s *Service) OnRetire(){
-}
+}