Update Candlepin configuration

Refs #6418

- Configure Candlepin to connect to the Qpid instance.
- Fix a bug in the Tomcat configuration that breaks Java 7.
Look at https://github.com/Katello/puppet-candlepin/pull/9/files#diff-60ae41fd0a31977447947f59940ee9a4L53 those are all configurable parameters that have defaults set by the params.pp file. Also note documentation above for each parameter.