ci: use the Fedora container registry for cephcsi:test
ci: use the Fedora container registry for cephcsi:test

This reduces the dependency on Docker, where image pull rate limits are
seen in the CI.

Signed-off-by: Niels de Vos <7bda0c0ee7f47171cc808e9e60292cbc5d8140dd@redhat.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi