Implement cache validation

[chansuke]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Fix the problem that gpu nodegroup may cant trigger scale-up from 0

Which issue(s) this PR fixes:

Fixes #8123

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: chansuke
Once this PR has been reviewed and has the lgtm label, please assign aleksandra-malinowska for approval. For more information see the Code Review Process.

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