Enforce use of fixed size int types in the API

[dougm]

Changes 'int' to 'int32', enforced by import_known_versions_test

Follow up to PR #53402

What this PR does / why we need it:

This PR changes a few fields within the API from 'int' to 'int32' and is now enforced by import_known_versions_test. We need this so integer fields are the same size regardless of $GOARCH.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Release note:

[k8s-ci-robot]

@dougm: Adding do-not-merge/release-note-label-needed because the release note process has not been followed.

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[dougm]

Following up on @thockin 's comment #53402 (comment)

[dougm]

/assign @thockin

[dougm]

/assign @wojtek-t

[thockin]

/lgtm
/approve

Sorry to force a rebase.

[k8s-ci-robot]

@dougm: you can't request testing unless you are a kubernetes member.

In response to this:

/retest

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[thockin]

/lgtm

[dougm]

/retest

[k8s-ci-robot]

@dougm: you can't request testing unless you are a kubernetes member.

In response to this:

/retest

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[dims]

/ok-to-test

[fejta-bot]

/retest
This bot automatically retries jobs that failed/flaked on approved PRs (send feedback to @fejta).

Review the full test history for this PR.

[thockin]

/lgtm

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dougm, thockin

Associated issue: 53402

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Needs approval from an approver in each of these OWNERS Files:

• cmd/OWNERS [thockin]
• pkg/OWNERS [thockin]
• plugin/cmd/kube-scheduler/OWNERS [thockin]
• plugin/pkg/scheduler/OWNERS [thockin]
• staging/src/k8s.io/api/OWNERS [thockin]

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[k8s-github-robot]

Automatic merge from submit-queue (batch tested with PRs 54005, 55127, 53850, 55486, 53440). If you want to cherry-pick this change to another branch, please follow the instructions here.