Adds support for the new RHEL clones (Alma, Rocky, Stream etc)
Here is an example of my current OS detection code which relies more on /etc/os-release instead of the /etc/redhat-release file.
The servers with "CentOS 7.9.2009" (or "Redhat unknown") were not yet updated. If the CentOS 7 version string is an important information for other CentOS users then I would reimplement this information.
Also I would like to ask if I can remove support for older Fedora versions, like 9/10 etc., and if EL <= 6 can be removed or if this code must be kept.
Will create a MR in the next few days.