it should be even simpler... :)

1. copy recursive /usr/share/ovirt-engine-extension-aaa-ldap/examples/simple to /etc/ovirt-engine

2. edit /etc/ovirt-engine/aaa/ldap1.properties, set vars.server, vars.user, vars.password to meet your setup, uncomment ipa on top and comment out the openldap.

3. until 3.5.1 you should also edit /etc/ovirt-engine/extensions.d/*.properties and replace ../aaa with /etc/ovirt-engine/aaa

Alon