Add a parameter to `bind::zone` which indicates whether a zone is dynamic or
not. This has the effect of allowing puppet to manage the zone file rather than
simply initialize it. This change also introduces more appropriate handling of
slave and stub zones, so that puppet will not populate a stock zone file,
forcing the nameserver to do a zone transfer when a zone is created.
Also, there is now a substancial amount of validation in the `bind::zone` class
in order to prevent invalid parameter combinations, so that validity may be
assumed elsewhere in the manifest and in the configuration template.
Previous iterations and even a release were all broken. The module works again,
sorry for the interlude.
- Giving up on params and moving to module_data (WIP)
- Change the Package and Service references to the static 'bind' name
- Add a meager amount of test coverage
