[NO-ISSUE] Test case for lowercase Jira ticket names

[bradmwilliams]

We had a scenario come up where the release-controller did not take the expected action, on a JIRA ticket, when it was included in a nightly build. After some digging, it turned out that the commit message contained the ticket id in lowercase.

Jira ticket: https://issues.redhat.com/browse/OCPBUGS-48504
PR: openshift/oc-mirror#1008
First Accepted nightly, post merge: https://amd64.ocp.releases.ci.openshift.org/releasestream/4.18.0-0.nightly/release/4.18.0-0.nightly-2025-01-21-015441

Corresponding Release-controller changelog:

This PR adds a test case that illustrates the expected behavior if/when a commit message comes in that doesn't match the expected regex here

The result is that there is no associated reference to a valid Bug.

[ardaguclu]

/lgtm
/hold
feel free cancel hold

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ardaguclu, bradmwilliams

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[bradmwilliams]

/unhold
Nothing critical and fully expect all tests to pass

[bradmwilliams]

/retest

[openshift-ci]

@bradmwilliams: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws-ovn-serial	96677c6	link	true	/test e2e-aws-ovn-serial

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