Newer CentOS image converge with RHEL image

[cjeanner]

Newer images are all exposing UEFI, meaning the root partition ID is the
fourth for both families.

As a pull request owner and reviewers, I checked that:

• Appropriate testing is done and actually running

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[pablintino]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pablintino

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• OWNERS [pablintino]

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[lewisdenny]

/lgtm