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.
system_u:system_u:s0-s15:c0.c1023 root:root:s0-s15:c0.c1023 __default__:user_u:s0