BUG/MINOR: Prevent unnecessary reloads when cookie-persistence is enabled

When a Service/Ingress/ConfigMap is configured with the
annotation `cookie-persistence`, the comparison with the
corresponding backend in the HAProxy settings will always fail,
because the `backend.Cookie.Domain` attribute of an initialized
model is a `<nil slice>` and the corresponding value returned by
HAProxy is an empty array.

Author: fabianonunes

pkg/annotations/service/cookie.go

@@ -36,6 +36,7 @@ func (a *Cookie) Process(k store.K8s, annotations ...map[string]string) error {
 		Nocache:  true,
 		Indirect: true,
 		Dynamic:  true,
+		Domains:  []*models.Domain{},
 	}
 	return nil
 }