571b9beac5
Automatic merge from submit-queue (batch tested with PRs 65256, 64236, 64919, 64879, 57932). 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>. Cancellable leader election **What this PR does / why we need it**: Adds ability to cancel leader election. Useful in integration tests where the whole app is started and stopped in each test. **Special notes for your reviewer**: I used the `context` package - it is impossible/hard to achieve the same behaviour with just channels without spawning additional goroutines but it is trivial with `context`. See `acquire()` and `renew()` methods. **Release note**: ```release-note NONE ``` /kind enhancement /sig api-machinery |
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