repos: add RHEL 8.3 repo for use in openshift/os Prow jobs

[miabbott]

RHCOs 4.7 will be using RHEL 8.3 in the short term, until after OCP
4.8 GAs. While changes to 4.7 are unlikely during this time, it
would be useful to have the ability to run Prow jobs on the
release-4.7 branch of openshift/os with the correct content.

[miabbott]

I think I did this correctly; followed the path blazed by Colin + Timothée

/assign travier
/assign cgwalters

[cgwalters]

Looks sane to me

[travier]

Shouldn't we switch the OCP-4.7-rhel8 to 8.3 instead of adding a new one? (and we will update it to 8.4 soon)

[miabbott]

Shouldn't we switch the OCP-4.7-rhel8 to 8.3 instead of adding a new one? (and we will update it to 8.4 soon)

I opted for a new set of repos to minimize the impact on any other component/repo that might be relying on ocp-4.7-rhel8

This way we only have to update the release-4.7 Prow job on openshift/os and no where else.

[miabbott]

/assign @bradmwilliams

[bradmwilliams]

/lgtm

[miabbott]

Looks like we still need approval from DPTP, gonna try...

/assign @stevekuznetsov

[miabbott]

/unassign @stevekuznetsov
/assign @openshift/openshift-team-developer-productivity-test-platform

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alvaroaleman, bradmwilliams, cgwalters, miabbott

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Details

Needs approval from an approver in each of these files:

• clusters/build-clusters/common/OWNERS [alvaroaleman]
• core-services/release-controller/OWNERS [alvaroaleman,bradmwilliams]

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[openshift-ci]

@miabbott: Updated the following 4 configmaps:

• base-repos configmap in namespace ocp at cluster app.ci using the following files:
  • key ocp-4.7-rhel83.repo using file core-services/release-controller/_repos/ocp-4.7-rhel83.repo
• base-repos configmap in namespace ocp at cluster build01 using the following files:
  • key ocp-4.7-rhel83.repo using file core-services/release-controller/_repos/ocp-4.7-rhel83.repo
• base-repos configmap in namespace ocp at cluster build02 using the following files:
  • key ocp-4.7-rhel83.repo using file core-services/release-controller/_repos/ocp-4.7-rhel83.repo
• base-repos configmap in namespace ocp at cluster vsphere using the following files:
  • key ocp-4.7-rhel83.repo using file core-services/release-controller/_repos/ocp-4.7-rhel83.repo

Details

In response to this:

RHCOs 4.7 will be using RHEL 8.3 in the short term, until after OCP
4.8 GAs. While changes to 4.7 are unlikely during this time, it
would be useful to have the ability to run Prow jobs on the
release-4.7 branch of openshift/os with the correct content.

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