This version depends on a newer version of librdkafka, so we need to make a coordinated update with all the services. There's some backwards incompatible API changes, so services using the driver should be updated:
- Backport librdkafka 0.9.4 and put it on apt.wikimedia.org
- Update ChangeProp https://github.com/wikimedia/change-propagation/pull/164
- Update Trending service
- Update EventStreams.
- Update SCB to use librdkafka 0.9.4
- Deploy the services