Accept XML describing a generic block job, and output it again as
needed. This may still need a few tweaks to match the documented XML
and RNG schema.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>