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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>. Fix `kubeadm upgrade` error while CoreDNS is installed **What this PR does / why we need it**: In the scenario when I have CoreDNS installed via `kubeadm init` and I want to continue using CoreDNS after `kubeadm upgrade`, the upgrade is unsuccessful and it gives an error. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes kubernetes/kubeadm#641 **Special notes for your reviewer**: **Release note**: ```release-note NONE ```