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.
621f119
pip is not really required by pbr upstream thread with details: http://lists.openstack.org/pipermail/openstack-dev/2015-April/062040.html Related: rhbz#1214794