DNS privileges are important for handling DNS locations which can be
created without DNS servers in IPA topology. We will also need this
privileges presented for future feature 'External DNS support'
https://fedorahosted.org/freeipa/ticket/2008
Reviewed-By: Petr Spacek <pspacek@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
Martin Basti