Version Controlling Foreman & Puppet

I have just setup Foreman for the first time & am not sure how to go about putting all of my configurations under version control. I know I can use Git for each module I install on my Puppet master but would prefer a more holistic solution that encompasses not just modules but also what classes are associated with each host and any variables set on the hosts. Any suggestions would be greatly appreciated along with related workflows. In case it's relevant, I do have GitLab setup as a central Git server on site and plan to setup a CI server such as Jenkins soon.

There is a plugin to keep your infrastructure definition in Foreman, pretty much a serialized version of your data in Git, and upload (and change your infrastructure) changes. Maybe that'd be useful for you

https://github.com/marianitadn/foregit