Required package hiredis is currently orphaned in Fedora and it's not
available in RHEL. But if you want to build with it just pass
--with hiredis when building the RPM.
Add to doc: README.md, DISCLAIMER, AUTHORS
Add to httpd/conf.d: auth_openidc.conf
Add to /var/cache: /var/cache/httpd/mod_auth_openidc/cache
/var/cache/httpd/mod_auth_openidc/metadata