Description

As the tests get more complicated, we're adding more test data, but a lot of the test data only works on specific hosts (e.g., different machines run different services that are testable).

We need to have decent default data in the test/data/ directory, preferably in yaml, but it should be locally overridable so that if someone wants to test a different service or package, they can.

David Schmitt proposed /etc/puppet/test.conf.yaml; I'd probably prefer s/.conf//, but otherwise am ok with that. Note that tests will need to work as both root and a normal user.