Update local.cfg (#134)

kamailio/local.cfg

@@ -28,6 +28,7 @@ debug = L_INFO
 # # #!trydef REGISTRAR_SYNC_ROLE
 # # #!trydef PRESENCE_SYNC_ROLE
 # # #!trydef PRESENCE_NOTIFY_SYNC_ROLE
+# # #!trydef PRESENCE_BROADCAST_ROLE
 
 ################################################################################
 ## SERVER INFORMATION