%postun -p /sbin/ldconfig is recommended if the only thing
present in the scriptlet is calling ldconfig. This is not the case
here. Source https://bugzilla.redhat.com/show_bug.cgi?id=1379030

Note: fix pipeline for fedora 29

Change-Id: I558f1f2c779cfc67331ebf98bd7c89610e322f74