[WIP] - Add periodic Codecov coverage job for kueue-operator

[anahas-redhat]

Following the initial Codecov onboarding #1446, this PR implements the second phase of the integration. The goal is to establish a consistent baseline of coverage data for the main branch.

Proposed Changes

• Periodic Job: Configures a new CI job to run coverage tests every 96 hours (4 days).
• Codecov Sync: Automates the upload of these periodic results to Codecov to track coverage trends over time.

Dependencies

• This PR requires the creation of the kueue-operator-codecov-token secret in the openshift-ci vault.
  • Ref: Adding a new secret to CI

Related PRs:

• Part 1 (Initial Config): #1446

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Details

Needs approval from an approver in each of these files:

• ci-operator/config/openshift/kueue-operator/OWNERS
• ci-operator/jobs/openshift/kueue-operator/OWNERS

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[openshift-ci-robot]

[REHEARSALNOTIFIER]
@anahas-redhat: the pj-rehearse plugin accommodates running rehearsal tests for the changes in this PR. Expand 'Interacting with pj-rehearse' for usage details. The following rehearsable tests have been affected by this change:

Test name	Repo	Type	Reason
periodic-ci-openshift-kueue-operator-main-coverage	N/A	periodic	Periodic changed

Interacting with pj-rehearse

Comment: /pj-rehearse to run up to 5 rehearsals
Comment: /pj-rehearse skip to opt-out of rehearsals
Comment: /pj-rehearse {test-name}, with each test separated by a space, to run one or more specific rehearsals
Comment: /pj-rehearse more to run up to 10 rehearsals
Comment: /pj-rehearse max to run up to 25 rehearsals
Comment: /pj-rehearse auto-ack to run up to 5 rehearsals, and add the rehearsals-ack label on success
Comment: /pj-rehearse list to get an up-to-date list of affected jobs
Comment: /pj-rehearse abort to abort all active rehearsals
Comment: /pj-rehearse network-access-allowed to allow rehearsals of tests that have the restrict_network_access field set to false. This must be executed by an openshift org member who is not the PR author

Once you are satisfied with the results of the rehearsals, comment: /pj-rehearse ack to unblock merge. When the rehearsals-ack label is present on your PR, merge will no longer be blocked by rehearsals.
If you would like the rehearsals-ack label removed, comment: /pj-rehearse reject to re-block merging.

[openshift-ci]

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[psturc]

So if this is intended as a periodic job, it would probably make sense to replace the job "test" (on line 60) with this, which adds that extra step to upload the coverage to codecov in PR.

not required though, just a recommendation.