Add CentOS 7 and Ubuntu CI checks
Project downstream needs CentOS 7 and it is handy to keep Ubuntu running.
Add a basic build (no need for long tests etc) for CentOS 7 and Ubuntu (maybe 20 or 22).
Project downstream needs CentOS 7 and it is handy to keep Ubuntu running.
Add a basic build (no need for long tests etc) for CentOS 7 and Ubuntu (maybe 20 or 22).