Silence Apache Hadoop/Avro log chatter

[ryan-carroll-graylog]

Replicate the logging level changes in https://github.com/Graylog2/graylog2-server/pull/15660 within this repository as well.

Notes for Reviewers

• [ ] The commit history must be preserved - please use the rebase-merge or standard merge option instead of squash-merge
• [x] Sync up with the author before merging