Move pkg/apis/core/v1.IsScalarResourceName under pkg/scheduler/util

[ingvagabund]

IsScalarResourceName is imported only inside pkg/scheduler packages.

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
Part of minimizing dependencies of the scheduling framework on kubernetes/kubernetes repository

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

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

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[ingvagabund]

@alculquicondor for the scheduling part, are you ok with moving the helper under the scheduler?

[alculquicondor]

/lgtm
/approve

I kind of want to get rid of the pkg/scheduler/util package at some point (the name is too generic), but this is good for now.

[ingvagabund]

@liggitt PTAL for the approval. The PR was already reviewed by the scheduler team.

[ingvagabund]

/retest

[ingvagabund]

/retest

[liggitt]

I'm in favor of isolating this because the v1 helpers are easy to accidentally misuse, but as long as this is still calling other v1helper methods, I don't think it's actually reduced kubernetes/kubernetes dependencies

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alculquicondor, ingvagabund, liggitt

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• pkg/scheduler/OWNERS [alculquicondor,liggitt]

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[alculquicondor]

I'm starting to wonder if we really need this check. Which resources would fail it, other than the ones we already pre-fetch early in Resource.Add or Resource.Max?