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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>. Merge kube-dns templates into a single file **What this PR does / why we need it**: Merge all of the kube-dns cluster yamls into a single file. **Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #42832 **Special notes for your reviewer**: /assign @bowei @shashidharatd cc @kevin-wangzefeng @euank @lhuard1A **Release note**: ```release-note NONE ```