* Move the server daemons into their own package
With this change the internal/server package now is dedicated to the server domain (workers and controllers) and not to the server daemons.
The hope is that this will make it easier to keep the daemons decoupled from the representation of the servers in the database.
This reduces the chance that we'll hit a failure due to a mismatched
worker address, on the certificate, especially if a worker has multiple
addresses. We aren't relying on IP/DNS for security anyways, so let's
not have it be a hindrance.