VOL-4141 Changed UnixNano() timestamp as Unix() at device_handler.go and alarm_manager.go

Change-Id: Iad629de8df08cb5582c98272916cfcbfa7ffaafc
diff --git a/internal/pkg/onuadaptercore/device_handler.go b/internal/pkg/onuadaptercore/device_handler.go
index ba969a1..6470a82 100644
--- a/internal/pkg/onuadaptercore/device_handler.go
+++ b/internal/pkg/onuadaptercore/device_handler.go
@@ -2144,7 +2144,7 @@
 
 	if !dh.isReconciling() {
 		logger.Infow(ctx, "UniUnlockStateDone event: Sending OnuUp event", log.Fields{"device-id": dh.deviceID})
-		raisedTs := time.Now().UnixNano()
+		raisedTs := time.Now().Unix()
 		go dh.sendOnuOperStateEvent(ctx, voltha.OperStatus_ACTIVE, dh.deviceID, raisedTs) //cmp python onu_active_event
 		pDevEntry := dh.getOnuDeviceEntry(ctx, false)
 		if pDevEntry == nil {