Add target platforms as per RHOAIENG-33925

[riprasad]

Backporting #547

[atheo89]

The linux/s390x on CPU flavors needs to be removed

[riprasad]

They were added by @Nash-123 in this PR
#463

Appears to me that he is working on enabling z builds and he would require this to test his changes.

[grdryn]

There are 15 files updated in #547 but only 9 here. Seems like some jobs might be missing on main...should those be added?

I also noticed when trying out a PR build that the jobs get triggered on 2 different konflux instances. Is that intentional?

[riprasad]

@grdryn Yes, the PR pipelines for the missing components shoud be there. @maorfr @wznoinsk FYA

Jobs getting triggered in both konflux instance is not intentional. This happens because we have both the internal and external Konflux apps installed in the repository, and the PAC controller only requires a PipelineRun definition to start a run, even if no Konflux application or component exists.

For more context, see https://redhat-internal.slack.com/archives/C04PZ7H0VA8/p1741180851877859?thread_ts=1739988410.131659&cid=C04PZ7H0VA8

[grdryn]

Thanks @riprasad 👍 I've created the following jira issue for the missing PR pipelines on main: https://issues.redhat.com/browse/RHOAIENG-34038