SEBA-300 Add ponsim_onu performance metrics

Change-Id: I8d43293511d38006d1a5495d99bf2e968cdb6241
diff --git a/ponsim/v2/ponsim.go b/ponsim/v2/ponsim.go
index cbb863d..0981351 100644
--- a/ponsim/v2/ponsim.go
+++ b/ponsim/v2/ponsim.go
@@ -263,7 +263,7 @@
 		Port:        int32(grpc_port),
 		AlarmsOn:    alarm_sim,
 		AlarmsFreq:  alarm_freq,
-		Counter:     core.NewPonSimMetricCounter(name),
+		Counter:     core.NewPonSimMetricCounter(name, device_type),
 
 		// TODO: pass certificates
 		//GrpcSecurity: certs,