[DEV] Fedora COPR now has partially restored some POWER8 machines for build job

[tle]

Fedora COPR was doing migration to new datacenter last year. The move's seems to be progressing well.

From what I know, some POWER8 machines are now back online

Ref: https://pagure.io/fedora-infrastructure/issue/9059

That means we could now build custom RPMs for Fedora with COPR again