Merge pull request #57172 from liggitt/upgrade-kubelet-binding

Automatic merge from submit-queue (batch tested with PRs 57172, 55382, 56147, 56146, 56158). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

gce: split legacy kubelet node role binding and bootstrapper role binding

fixes issue upgrading 1.8->1.9 or downgrading 1.9->1.8

fixes #57047

```release-note
NONE
```

cluster/addons/rbac/legacy-kubelet-user-disable/kubelet-binding.yaml

@@ -7,6 +7,20 @@ metadata:
   labels:
     kubernetes.io/cluster-service: "true"
     addonmanager.kubernetes.io/mode: EnsureExists
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:node
+subjects: []
+---
+# This is required so that new clusters still have bootstrap permissions
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: kubelet-bootstrap
+  labels:
+    kubernetes.io/cluster-service: "true"
+    addonmanager.kubernetes.io/mode: Reconcile
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole