ISO tracker cannot vary tests by release

[Dave Jones]

I'm currently running through the ISO tests for Ubuntu 22.04.4 (https://iso.qa.ubuntu.com/qatracker/milestones/451/builds) on various Raspberry Pi models. Unfortunately, the Pi 5 4GB and 8GB models are listed as ones that should be tested (e.g. https://iso.qa.ubuntu.com/qatracker/milestones/451/builds/295998/testcases). These boards are unsupported on jammy, but appear because the ISO tracker cannot show/hide/vary tests according to the release being tested.

I don't particularly want to mark those boards "failed"; that has the potential to hold up the release when it shouldn't be. Nor do I want to mark them "passed"; that has the potential to confuse users ("what do you mean unsupported? It passed on the ISO tracker!"). Obviously the "proper" fix is to permit variation of tests by release, but perhaps a simple stop-gap measure would be to add an "unsupported" status for tests to indicate a state of "deliberately not tested"?