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.
98b6135
Install macros to %{_rpmconfigdir}/macros.d. https://lists.fedoraproject.org/pipermail/devel/2014-January/195026.html