Use cookies saved server side (#188)

* retrieve cookies stored server side

fixed netscape cookies validation pipeline

* code refactoring

server/rest/container.go

@@ -28,7 +28,9 @@ func ApplyRouter(args *ContainerArgs) func(chi.Router) {
 		r.Post("/exec", h.Exec())
 		r.Get("/running", h.Running())
 		r.Get("/version", h.GetVersion())
+		r.Get("/cookies", h.GetCookies())
 		r.Post("/cookies", h.SetCookies())
+		r.Delete("/cookies", h.DeleteCookies())
 		r.Post("/template", h.AddTemplate())
 		r.Get("/template/all", h.GetTemplates())
 		r.Delete("/template/{id}", h.DeleteTemplate())