Need to plan a better way to parse config files

[bradcypert]

The deckard hosts (config) file is a huge part to deckard. However, it currently does not support multiple Databases well, as the config options vary heavily from database to database.

I'm trying to plan a way to allow the config to be handed off to the database layer (as well as the flags, I suppose?) so that each database can read what it needs from the config/flags to prepare itself for execution.

Proper execution of this refactor should also solve #15