Prow jobs for publishing k8s provider multi arch images

[chandramerla]

What this PR does / why we need it:
This PR adds multi-arch publish jobs for centos9 and k8s provider images.

As we've added s390x support in k8s provider (started with 1.30 slim), centos9 and gocli images as part of kubevirt/kubevirtci#1252, this PR does changes required in project-infra repo to enable the prow jobs for the same.

Special notes for your reviewer:
This PR makes sense to be merged along with changes said above.

Checklist

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• Design: A design document was considered and is present (link) or not required
• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and Keep it simple
• Refactor: You have left the code cleaner than you found it (Boy Scout Rule)
• Upgrade: Impact of this change on upgrade flows was considered and addressed if required
• Testing: New code requires new unit tests. New features and bug fixes require at least on e2e test
• Documentation: A user-guide update was considered and is present (link) or not required. You want a user-guide update if it's a user facing feature / API change.
• Community: Announcement to kubevirt-dev was considered

Release note:

NONE

[kubevirt-bot]

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[brianmcarey]

/cc

[chandramerla]

/sig ci

[chandramerla]

@brianmcarey Thanks for your review immediately after your vacation :)

I've added initial replies/questions to your comments and would start doing changes.

[chandramerla]

@brianmcarey Could you please review this PR again, I've tested all the changes locally and also updated with new pr-creator image now? Thanks for your inputs so far.

[chandramerla]

The pre-requisite for this PR i.e., a new bootstrap image to be rebuilt with changes are moved to a separate PR (#3648 )

[kubevirt-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[chandramerla]

@brianmcarey Done some changes and added question(s).

[brianmcarey]

/test all

[chandramerla]

@brianmcarey Addressed your latest comments. Thanks.