fix broken configure feature

feature was broken when default values for the berkshelf configuration were inspecting
a Chef Config file if it was present
fix failing invalid configuration config feature

this was broken because missing parts of configurations will just result in falling
back to the default value in the latest versio of chozo. Locking the latest version
of chozo and fixing this feature to still test for a REAL failure.
Merge pull request #338 from RiotGames/fix-configure-features

fix broken configure features