Changed URI to UUID
Changed URI to UUID

Slumber accepts either URIs or UUIDs, and since we have the UUID no need
to change it to a URI.

michal-ruzicka/archivematica,sevein/archivematica,sevein/archivematica,artefactual/archivematica,eckardm/archivematica,michal-ruzicka/archivematica,michal-ruzicka/archivematica,eckardm/archivematica,eckardm/archivematica,sevein/archivematica,artefactual/archivematica,sevein/archivematica,eckardm/archivematica,artefactual/archivematica,michal-ruzicka/archivematica,artefactual/archivematica