[release-4.18] USHIFT-5096: Use RC RPMs

[pmtk]

No description provided.

[openshift-ci-robot]

@pmtk: This pull request references USHIFT-5096 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.18.0" version, but no target version was set.

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[ggiguash]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ggiguash, pmtk

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[openshift-ci]

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[ggiguash]

/label backport-risk-assessed
/label jira/valid-bug
/label cherry-pick-approved