Use api.env.basedn instead of anonymously accessing LDAP to get base DN. Use api.env.basedn instead of searching filesystem for ldapi socket. https://fedorahosted.org/freeipa/ticket/4953 Reviewed-By: Jan Cholasta <jcholast@redhat.com> Reviewed-By: Petr Vobornik <pvoborni@redhat.com> Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>