* rhel->rhel8 rename of the include file for install guides
* Add RHEL 9
* Add Alma, Oracle, and Rocky Linux 9 pre-emptively
* Add Alma Linux 9 EOL date.
(cherry picked from commit ee69f6e17f)
Co-authored-by: Jakub Kuczys <6032823+jack1142@users.noreply.github.com>