[release-4.15] USHIFT-2463: Add PreRunModifier flag to skip RF

[agullon]

Manual cherry-pick from #3343

[openshift-ci-robot]

@agullon: This pull request references USHIFT-2463 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 either version "4.15." or "openshift-4.15.", but it targets "openshift-4.16" instead.

In response to this:

Manual cherry-pick from #3343

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[agullon]

/retest

[agullon]

/retest

[agullon]

/retest

[ggiguash]

/label backport-risk-assessed
/label jira/valid-bug
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[pacevedom]

/label cherry-pick-approved

[openshift-ci]

@agullon: all tests passed!

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