Clean up the code and bring it to the standard of the built-in providers

[ananace]

This would mean redoing the configuration parser to be separate from the subnet service, split the lease watcher code into a service, and generally restructure those pieces to be more easily read and understood.

[ananace]

Some progress on this has been done as of 1.0, still remaining to be done;

• Split watchers into separate services
• Separate the configuration parser from the subnet service