Add recovery test in CI

[hongchaodeng]

bootkube recover is an important tool that we provide officially to users. It would be great to have recovery test added to CI.

Reference:

• https://github.com/kubernetes-incubator/bootkube/blob/master/hack/multi-node/bootkube-test-recovery-self-hosted-etcd
• https://github.com/kubernetes-incubator/bootkube/blob/master/hack/multi-node/bootkube-test-recovery

[fejta-bot]

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/lifecycle stale

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/lifecycle rotten

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[k8s-ci-robot]

@fejta-bot: Closing this issue.

In response to this:

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
Mark the issue as fresh with /remove-lifecycle rotten.

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/close

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