simplify cri health check

[grosser]

• we only need the runtime socket
• we only need to fetch 1 pod

[k8s-ci-robot]

Hi @grosser. Thanks for your PR.

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/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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/lifecycle rotten

[Random-Liu]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: grosser, Random-Liu

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[Random-Liu]

/ok-to-test