The goal here is to allow mediawiki to create an openid user while
leaving the createaccount permission false. According to
documentation[1] this settings should do just that.
We want try and keep createaccount set to false, as this will force
users to use openid.
[1] https://www.mediawiki.org/wiki/Extension:OpenID
Change-Id: Id63a33907f326ddc561ec1049dd1766a7319eb9e
Signed-off-by: Paul Belanger <pabelanger@redhat.com>