Automatic merge from submit-queue. 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>.

GKE misc fixes

gce: readd node-bootstrap to kubelet user 
We still need to be able to create and read CSRs from the kubelet user.

revert #55512

Fixes https://github.com/kubernetes/kubernetes/issues/55189

```release-note
NONE
```