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Automatic merge from submit-queue (batch tested with PRs 66793, 67405, 67068, 67501, 67484). 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>. pkg/util/metrics: make re-registration of RateLimiterMetric non-fatal In integration tests we might register these metrics multiple times in parallel. Instead of unregistering and making somehow sure those tests can run in parallel, we just make the registration idem-potent. Prerequisite for controller manager integration tests https://github.com/kubernetes/kubernetes/pull/64149.