Let's talk about the native installation

To give an alternative of a full migration to tutor, we could instead start migrating services to docker in the current edx/configuration repository, and have ansible install docker and start the services (We could probably have supervisord start the docker images).

This allows us to migrate one service at a time, reusing all the configuration already done by the configuration repo, and give us an incremental upgrade path for all services, as not all of them have a ready to use docker image right now.