feat: add label for prometheus query.

Signed-off-by: X1aoZEOuO <[email protected]>

Author: X1aoZEOuO

pkg/controller/inference/service_controller.go

@@ -439,6 +439,7 @@ func CreateServiceIfNotExists(ctx context.Context, k8sClient client.Client, Sche
 			ObjectMeta: metav1.ObjectMeta{
 				Name:      svcName,
 				Namespace: service.Namespace,
+				Labels:      modelLabels(model[0]),
 				// For activator service, we can ignore it if serverless config is not enabled.
 				Annotations: activatorAnnotations(model[0]),
 			},