[VOL-3424] Switch completely to Context based Logger instance

Change-Id: I394ec682d4a8237740612de95826668e109f84b4
diff --git a/internal/pkg/core/openolt_eventmgr.go b/internal/pkg/core/openolt_eventmgr.go
index 8a58303..584cfe0 100644
--- a/internal/pkg/core/openolt_eventmgr.go
+++ b/internal/pkg/core/openolt_eventmgr.go
@@ -802,6 +802,6 @@
 	if err := em.eventProxy.SendDeviceEvent(ctx, de, voltha.EventCategory_EQUIPMENT, voltha.EventSubCategory_ONU, raisedTs); err != nil {
 		return err
 	}
-	log.Debugw("onu-differential-reach-exceeded–event-sent-to-kafka", log.Fields{"onu-id": onuDRE.OnuId, "intf-id": onuDRE.IntfId})
+	logger.Debugw(ctx, "onu-differential-reach-exceeded–event-sent-to-kafka", log.Fields{"onu-id": onuDRE.OnuId, "intf-id": onuDRE.IntfId})
 	return nil
 }