bro{,-core,ctl}-2.5.3-1.2.el7.x86_64.rpm and libbroccoli{,-devel}-2.5.3-1.2.el7.x86_64.rpm - Bro
was recomplied for CentOS/RHEL 7 to use PF_Ring.
See the instructions here that explains this capability.
Note that since PF_Ring does not support Fedora, Bro for those systems were not recompiled.