* Use YAML anchors to avoid repeating config blocks
* Use docker volumes to persist data for mysql
* Allow setting `FLEET_SERVER` (fixes#2127) when using the docker-compose file to spin up multiple osquery clients
Almost two years ago, we began referring to the project as Fleet, but there are
many occurences of the term "Kolide" throughout the UI and documentation. This
PR attempts to clear up those uses where it is easily achievable.
The term "Kolide" is used throughout the code as well, but modifying this would
be more likely to introduce bugs.