With 389 DS 1.3.3 upwards we can leverage the nsslapd-return-default-opattr
attribute to enumerate the list of attributes that should be returned
even if not specified explicitly. Use the behaviour to get the same attributes
returned from searches on rootDSE as in 1.3.1.
https://fedorahosted.org/freeipa/ticket/4288
Reviewed-By: Martin Kosek <mkosek@redhat.com>
