Via Bug #54986 we adjusted the UCS calls to slap tools to always specify -f /etc/ldap/slapd.conf to allow them to work also in case /etc/ldap/slapd.d/cn=config.ldif exist (even if invalid). We should also consider creating a plugin for UMC system diagnostic that checks for the presence of /etc/ldap/slapd.d/cn=config.ldif and warns the administrator in that case.