Updates to become a parameterized class and reduce the dependencies

[ehelms]

this module has to only the certs module.

Previously, this module for deploying Candlepin was tightly coupled
to a few different modules including the Katello module. This work
attempts to invert the relationship by parameterizing the Candlepin
class. This will allow a module like the Katello module to set certain
parameters that it would like Candlepin to use during configuration.
The only module left as a dependence is the certs module that creates
and sets up a keystore for tomcat via https.

[ehelms]

Closing in favor of upstream branch for collaboration - https://github.com/Katello/puppet-candlepin/tree/parameterize