Update chef and chefdk not to always_build anymore thanks to new build_version DSL.
Merge pull request #198 from opscode/sersut/build_version_dsl

Update chef and chefdk not to always_build anymore thanks to new build_version DSL.
Update to include non-default versions of software definitions.

This is so we can bring 1.4-stable server onto current omnibus.
Try build without extra non-default versions.