Have you stopped supporting Fedora for new releases? I dont' see it in the list and the most recent fedora in the mirror list on the previous release was 24.
Yes, sadly Fedora is moving too fast to be able to match the changes they've introduced between Fedora 24 and Fedora 27 which will be GA next week. I hope we'll be able to re-align with Fedora with oVirt 4.3.
ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D