Add true/false yes/no conf support
Move init parameters to params class
main_cf_source can be safely pulled from $postfix
Update owner from 0 => root
Add new configuration variables

These might later be removed and replaced by calling code simply using the postfix::conf resource type to define all of these settings.
Support additional required packages.

Used for installing ca-root-nss on FreeBSD
Add configuration to manage outbound ip