These two fields allow to specify a different default assignee for ticket opened against
this package in bugzilla. Note: The EPEL field is
always displayed for packages in the 'rpms' namespace regardless of whether it
is used in bugzilla or not.
Add BuildRequires on xz-devel
perf needs this to be able to deal with xz compressed modules apparently. It
helpfully warns about it missing but doesn't fail the build. Given we install
modules xz compressed, it's probably a good idea.