Allow zero value for Sleep Action of PreStop Hook

[sreeram-venkitesh]

Enhancement Description

• One-line enhancement description (can be used as a release note): Allows PreStop lifecycle handler's sleep action to have a zero value
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/4818-allow-zero-value-for-sleep-action-of-prestop-hook/README.md
• Discussion Link: Discussion in the GitHub thread of original KEP.
  • WIP: https://docs.google.com/document/d/1o01gH2ELPY-kjwgemjg3BbWiykx37ag-4VYwwJ1jBTw/edit?usp=sharing
• Primary contact (assignee): @sreeram-venkitesh
• Responsible SIGs: sig-node
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.32
  • Beta release target (x.y): 1.33
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s): KEP-4818: Allow zero value for Sleep Action of PreStop Hook #4855
  • Code (k/k) update PR(s): KEP-4818: Relaxed validation for allowing zero in PreStop hook sleep action kubernetes#127094
  • Docs (k/website) update PR(s): KEP 4818: PodLifecycleSleepActionAllowZero website#48439
• Beta
  • KEP (k/enhancements) update PR(s): KEP 4818: Promote zero value for Pod Lifecycle Sleep action to beta #5139
  • Code (k/k) update PR(s):
    • fix(pod/util): fix typo in getting pod validation options kubernetes#129946
    • KEP 4818: PodLifecycleSleepActionAllowZero to Beta kubernetes#130621
  • Docs (k/website) update(s): KEP 4818: PodLifecycleSleepActionAllowZero beta graduation website#49858

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[sreeram-venkitesh]

/sig node

[SergeyKanzhelev]

/milestone v1.32
/label lead-opted-in