ci: fix edge test failures in cs9 and fedora40

[yih-redhat]

This PR fixed test failures on fedora40 and centos-stream9.

1. disabled edge-commit and edge-installed test on fedora40 due to bug https://bugzilla.redhat.com/show_bug.cgi?id=2294897
2. disabled minimal-raw test on fedora40 due to bug minimal-raw install podman issue virt-s1/rhel-edge#3531 (this error only happens in upstream, need to use latest snapshot repo)
3. disabled ostree-remount test case on cs9 due to bug https://issues.redhat.com/browse/RHEL-25249
4. fixed some test case errors.

Those disabled cases will be added back after the bugs are fixed.

[yih-redhat]

@achilleas-k could you please review this pull request? With this pr, all edge test cases will run in testing-farm, includes rhel9.5, cs9 and fedora40.

[achilleas-k]

Could you split the PR into multiple commits? It seems to be doing more than the commit message implies. The changes in minimal-raw.sh and check_ostree.yaml, if they're related, could use a mention in the commit message. If they're unrelated to the move to testing farm, then separate commits would make more sense.