VOL-3095: Added olt device_id in ONU Discovery Event

Change-Id: I7d778e3954418dd7a1766a8b7f976ccd3f38e70a
diff --git a/internal/pkg/core/device_handler.go b/internal/pkg/core/device_handler.go
index 8cf4c50..6db0063 100644
--- a/internal/pkg/core/device_handler.go
+++ b/internal/pkg/core/device_handler.go
@@ -1112,7 +1112,7 @@
 				"pon-interface-id": ponintfid,
 				"serial-number":    sn}, err)
 		}
-		dh.eventMgr.OnuDiscoveryIndication(onuDiscInd, onuDevice.Id, onuID, sn, time.Now().UnixNano())
+		dh.eventMgr.OnuDiscoveryIndication(onuDiscInd, dh.device.Id, onuDevice.Id, onuID, sn, time.Now().UnixNano())
 		logger.Infow("onu-child-device-added",
 			log.Fields{"onuDevice": onuDevice,
 				"sn":        sn,