run preload on hot restarts as well, in case kubernetes version has been upgraded

pkg/minikube/bootstrapper/kubeadm/kubeadm.go

@@ -524,17 +524,22 @@ func (k *Bootstrapper) UpdateCluster(cfg config.ClusterConfig) error {
 		return errors.Wrap(err, "kubeadm images")
 	}
 
-	if cfg.KubernetesConfig.ShouldLoadCachedImages {
-		if err := machine.LoadImages(&cfg, k.c, images, constants.ImageCacheDir); err != nil {
-			out.FailureT("Unable to load cached images: {{.error}}", out.V{"error": err})
-		}
-	}
 	r, err := cruntime.New(cruntime.Config{Type: cfg.KubernetesConfig.ContainerRuntime,
 		Runner: k.c, Socket: cfg.KubernetesConfig.CRISocket})
 	if err != nil {
 		return errors.Wrap(err, "runtime")
 	}
 
+	if err := r.Preload(cfg.KubernetesConfig); err != nil {
+		return errors.Wrap(err, "preloading")
+	}
+
+	if cfg.KubernetesConfig.ShouldLoadCachedImages {
+		if err := machine.LoadImages(&cfg, k.c, images, constants.ImageCacheDir); err != nil {
+			out.FailureT("Unable to load cached images: {{.error}}", out.V{"error": err})
+		}
+	}
+
 	for _, n := range cfg.Nodes {
 		err := k.UpdateNode(cfg, n, r)
 		if err != nil {