- add support for AL2023

- Builds on CentOS_[5678] and possibly other distros failed because
their 'rpm' didn't recognize the "Recommends:" tag. I've wrapped
that tag in an "%if 0%{?suse_version}" to work around it.
- simplifiy conditions for all rhel like distros to skip testsuite
- fix for Fedora 30/Rawhide
not available otherwise