Provide Kafka and ZooKeeper instances for Sentry

Summary:
Modern Sentry stacks uses Kafka to transfer messages, and ZooKepper
to coordinate Kafka instances.

Kafka topics are created 20 seconds after startup if not done in the past.
A feature flag file .topics_initialized is created to indicate it's done.

Ref T1791.

Test Plan:

• Deploy on docker-002
• Check connectivity done between Zookeeper and Kafka with docker logs
• Check topics with kafka-topics --list --bootstrap-server localhost:9092

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1791

Differential Revision: https://devcentral.nasqueron.org/D2871