More automated configuration with Puppet

[kpaulisse]

octocatalog-diff was designed to run in a CI environment where there is no Puppet master or even Puppet agent available. Still, in many cases there is a Puppet configuration. To make things easier to configure, we should give the ability to read a Puppet master or agent configuration in lieu of setting up those parameters in octocatalog-diff.

Some things we might be able to get from the agent or server configuration:

• Path to ENC
• Path to global hiera.yaml
• Use a Puppet agent that's already installed
• Code path for checked out code
• SSL certificates to connect to Puppet master or puppetdb
• IP and port for the Puppet master