
Automatic merge from submit-queue (batch tested with PRs 52452, 52115, 52260, 52290) Add env var to enable kubelet rotation in kube-up.sh. Fixes https://github.com/kubernetes/kubernetes/issues/52114 ```release-note Adds ROTATE_CERTIFICATES environment variable to kube-up.sh script for GCE clusters. When that var is set to true, the command line flag enabling kubelet client certificate rotation will be added to the kubelet command line. ```