promote memory qos to beta

[pacoxu]

• merge after [postponed]promote MemoryQoS to Beta kubernetes#118699

https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2570-memory-qos: kubernetes/enhancements#2570

[Shubham82]

put on hold until k8s/k8s #118699 will merge.

/hold

Please remove the hold label once the above PR will merge.

[Shubham82]

Thanks, @pacoxu
/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 788cc22f124b8c36d239c03f9ede438af6a8769f

[windsonsea]

Thanks.
/lgtm

[tengqm]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tengqm

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[sftim]

Is this change still needed for v1.28?

[sftim]

Because kubernetes/kubernetes#118699 is marked as postponed:
/approve cancel

Feel free to re-approve if context shows that's the right thing to do.

[pacoxu]

Is this change still needed for v1.28?

No, we decided to postpone the promotion due to a throttling problem that will make application stuck and no successful response later( which is worse than immediately oom kill).

[pacoxu]

/close
I will open another one if we want to promote it later.

[k8s-ci-robot]

@pacoxu: Closed this PR.

In response to this:

/close
I will open another one if we want to promote it later.

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