Update existing 389-DS cn=RSA,cn=encryption config
389-DS >= 1.4.0 on Fedora 28 has a default entry for
cn=RSA,cn=encryption,cn=config. The installer now updates the entry in
case it already exists. This ensures that token and personality are
correct for freeIPA
Fixes: https://pagure.io/freeipa/issue/7393
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>