Add Hiera data to webinar_env environment
Add webinar_env data
Use application tiers instead of environments

So, the whole point of the Hiera + R10k post is to ALSO tie it to
the post on disambiguating Puppet environments from application tiers.

This post renames webinar_env.yaml to dev.yaml
Update dev.yaml
Add a base environment.conf

This file configures directory environments, as opposed to static
puppet.conf-style environments.
configure_directory_environments script

This script will configure puppet.conf to use directory environments.