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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>. kubeadm: add better test coverage to version.go **What this PR does / why we need it**: This PR adds unit tests for the file `kubeadm/app/cmd/version.go` via `version_test.go`. Test coverage is increased to 90% for this file. only a couple of functions are tested. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: None **Special notes for your reviewer**: related PRs: https://github.com/kubernetes/kubernetes/pull/59220 https://github.com/kubernetes/kubernetes/pull/58540 **Release note**: ```release-note NONE ```