The repositoryid is not allowed to have spaces.
The repositoryid is not allowed to have spaces.

From the yum.conf man page:
repositoryid Must be a unique name for each repository, one word.

Following the pattern for the file name, replacing spaces with underscores.

cernops/oz,clalancette/oz,imcleod/oz,ndonegan/oz,nullr0ute/oz,clalancette/oz,NeilBryant/oz,moofrank/oz,nullr0ute/oz,mgagne/oz,NeilBryant/oz,ndonegan/oz,mgagne/oz,imcleod/oz,moofrank/oz,cernops/oz