It's first class, because unlike '**', it actually works, i.e. doesn't
require 'gen': false.

'**' will go away next.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NDaniel P. Berrange <berrange@redhat.com>