Currently, mediawiki/event-schemas are a submodule of refinery/source, and are manually included in the refinery-camus.jar at compile time. This makes deploying new schemas brittle.

Instead, refinery-camus should learn how to load schemas at run time from a configurable path. Then we can independently deploy mediawiki/event-schemas, and each run of Camus would look up all deployed Avro schemas from this path.