Revert "master: rename grpc function KeepConnected() to SubscribeVolumeLocationUpdates()"

This reverts commit af71ae11aa.

weed/command/benchmark.go

@@ -130,7 +130,7 @@ func runBenchmark(cmd *Command, args []string) bool {
 	}
 
 	b.masterClient = wdclient.NewMasterClient(b.grpcDialOption, "client", "", "", pb.ServerAddresses(*b.masters).ToAddresses())
-	go b.masterClient.LoopConnectToMaster()
+	go b.masterClient.KeepConnectedToMaster()
 	b.masterClient.WaitUntilConnected()
 
 	if *b.write {

weed/command/master.go

@@ -157,7 +157,7 @@ func startMaster(masterOption MasterOptions, masterWhiteList []string) {
 		}
 	}()
 
-	go ms.MasterClient.LoopConnectToMaster()
+	go ms.MasterClient.KeepConnectedToMaster()
 
 	// start http server
 	httpS := &http.Server{Handler: r}

weed/command/master_follower.go

@@ -132,7 +132,7 @@ func startMasterFollower(masterOptions MasterOptions) {
 	glog.V(0).Infof("Start Seaweed Master %s grpc server at %s:%d", util.Version(), *masterOptions.ip, grpcPort)
 	go grpcS.Serve(grpcL)
 
-	go ms.MasterClient.LoopConnectToMaster()
+	go ms.MasterClient.KeepConnectedToMaster()
 
 	// start http server
 	httpS := &http.Server{Handler: r}