[wip] add docker compose

[iksaif]

The goal is to have a devenv working with only docker-compose up, it could even be used in the tests.

A few commands that work:

docker build . -t biggraphite

docker-compose up --force-recreate --no-start
docker-compose start

docker exec -i cassandra cqlsh < ./share/schema.cql
docker run --network="host" biggraphite bash -c /opt/venv/bin/bginit.sh

TODO:

• [ ] Cleanup the Dockerfile
• [ ] Make Dockerfile.dev work
• [ ] Use supervisord (or systemd)
• [ ] Apply the schema in docker-compose
• [ ] Add logs, data and conf volumes

[coveralls]

Coverage increased (+0.07%) to 82.186% when pulling c7eb1c1c0e619f0111a9f0e87c6b3e233995044a on iksaif:docker into 40619360fa1ba3815a657d13665109509d722d06 on criteo:master.

[jfwm2]

Closing since docker-compose setup is performed in https://github.com/criteo/biggraphite/pull/504