The references were copied to Avia and maintained bu its developers.
For BoY we rely on their version which is located here:
https://arcanum.yandex-team.ru/arc/trunk/arcadia/travel/avia/ticket_daemon_api/data/

For our only BoY partner it is the following files:
https://arcanum.yandex-team.ru/arc/trunk/arcadia/travel/avia/ticket_daemon_api/data/fare_families/26_aeroflot.json
https://arcanum.yandex-team.ru/arc/trunk/arcadia/travel/avia/ticket_daemon_api/data/fare_families_expressions/26_aeroflot.xml

For some reason they decided not to support some complex rules and ignore some exceptions.
Any issues with these rules should be fixed in the avia version first
and then the updated contents could be copied here.

This temporary hack will be automated in TRAVELBACK-1198.
