Support CentOS Stream 10

[elfosardo]

CentOS Stream 10 is not officially out yet but bits are already available https://mirror.stream.centos.org/10-stream/ and can be used for testing.

Important changes include:

kernel 6.10 or more recent
Python 3.12

This heavily impacts ironic and, as a consequence, the ironic-image

Before moving forward with this some changes are needed in the ironic project and the entire Openstack ecosystem.
For example while Python 3.12 is already being tested, it's not officially supported yet, and there's still no plan to start using CS10 in CI, although discussions on migrating some important components are ongoing since a while, for example removing eventlet https://review.opendev.org/c/openstack/governance/+/902585

This issue should be used to track the progression on the CS10 migration for ironic-image, while keeping an eye on the progress in the ironic project itself.

/kind feature

[Rozzii]

/triage accepted

[elfosardo]

The Epoxy development cycle for Openstack has just started and includes support for Python 3.12, which is now actively tested

[elfosardo]

I've opened a bug to ask inotify-tools build for EPEL10 https://bugzilla.redhat.com/show_bug.cgi?id=2331998

[elfosardo]

ironic upstream CI is still based on CS9 and AFAIK there is no will to migrate it during this development cycle, but it could change depending on the priorities
my suggestion is to hold on to this until we have some movement in ironic upstream