HotsTac(k)os: switch to fedora/fedora-minimal:42

[hjensas]

Replace docker.io and opendevmirror base images with Fedora 42.

Build custom rabbitmq and memcached containers, switch MariaDB to quay.io/fedora/mariadb-118, and update OpenStack branch to stable/2025.2. fedora-minimal:42 for Python 3.13 compatibility.

Assisted-By: Claude (claude-4.6-opus-high-thinking)

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/e2bd70b7a31c40ba952c1407941a1e08

✔️ hotstack-pre-commit SUCCESS in 5m 07s
❌ devsetup-hotstack-os TIMED_OUT in 47m 59s

[hjensas]

recheck

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/32a7a46825f841888adeaffe981e3d76

✔️ hotstack-pre-commit SUCCESS in 5m 24s
❌ devsetup-hotstack-os TIMED_OUT in 48m 08s

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/944e44aac26d46cdab9a71f1428e8af7

✔️ hotstack-pre-commit SUCCESS in 5m 31s
❌ devsetup-hotstack-os TIMED_OUT in 48m 41s

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/63f44161ab604aa6ba3337dff0fca845

✔️ hotstack-pre-commit SUCCESS in 5m 32s
❌ devsetup-hotstack-os FAILURE in 18m 23s