Automated cherry pick of #2919: Add gauge for skipped preemptions within a cycle

[alculquicondor]

Cherry pick of #2919 on release-0.8.

#2919: Add gauge for skipped preemptions within a cycle

For details on the cherry pick process, see the cherry pick requests page.

Add gauge metric admission_cycle_preemption_skips that reports the number of Workloads in a ClusterQueue
that got preemptions candidates, but had to be skipped in the last cycle.

[alculquicondor]

/assign @tenzen-y

/kind feature

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[tenzen-y]

Thanks
/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: a5fc47fddb6c61ed9e5088cf72ae264d344b7002

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alculquicondor, tenzen-y

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