CI tests: use old schema when testing hostmask-based sudo rules
Newer versions of sssd use native IPA schema to process sudo rules.
However, this schema currently has no support for hostmask-based rules
and causes some sudo CI tests to fail. We have to temporarily set
sssd.conf to use ou=sudoers,$SUFFIX as a sudo rule search base when
executing them.
https://fedorahosted.org/freeipa/ticket/5625
Reviewed-By: Tomas Babej <tbabej@redhat.com>