Add Host table to manage remote hosts about dagobah HOT 2 CLOSED

The Host class should live in the poorly-named components.py module.

The core Dagobah class should maintain its own list of Hosts, very similar to how it maintains a list of the Jobs it knows about. You should add a commit_host method to all of the backends, as well as making relevant changes to other methods like delete_dagobah (basically, do for hosts whatever the backend is doing for jobs). The Mongo backend should get a new collection to store the Hosts on (in addition to their place as an array on the main Dagobah collection). The SQLite backend will need to do its whole normalized thing, adding at least one additional table depending on how you want to structure the Hosts themselves.

Can you elaborate on what you meant by a parallel job object?

You're tackling a pretty big feature here and getting yourself into pretty much the entire code base, so let me know if you'd like me to help with anything. Thanks again.

from dagobah.

Also, let's try to keep discussion on the PR to the branch I've set up so we don't have to keep adding issues.

from dagobah.