Since the change on fedorapeople was a success, we need to make this
change on the builders as well.
The problem is that when we create rawhide each night, we have random
builders create a chroot in order to run pungi in. The chroot is
generated from the freshly made rawhide repos, which have the newer
sha256 sum in them. We need a newer yum and the python-hashlib build in
order for the host yum to be able to process that metadata and generate
Fedora -- Freedom² is a feature!