Groovy helper scripts should be abstracted out of the repo

[rtyler]

In order to reduce copypasta between this Puppet module and the community Chef cookbook, @abayer and I should figure out how to pull it out of this codebase`

[danzilio]

What do you think about making it a Jenkins plugin?

[jhoblitt]

I've had a few thoughts about converting it into rest API end points and do away with the CLI jar completely but I haven't do any prototype work. Are you interested to working such a beast?