add sleep to install-test for windows

after releasing artifacts to preprod we need to sleep to wait for
the omnitruck cronjob to scrape s3 and offer the artifacts.  otherwise
the windows slaves always fail the first time through the release
pipeline.

using powershell because we seem to have that everywhere now.  this
whole stupid bat file now should be rewritten in powershell...
Update chefdk mac packager resources.
Update chefdk pkg resources.
Make the year in the license files dynamic.
Disable berks install in the build scripts.
Merge pull request #143 from opscode/lcg/omnitruck-win-sleep

add sleep to install-test for windows
Pick up signing and per project resources.
Merge pull request #145 from opscode/project-specific-resources

pkg installer beautification for chef & chefdk
Properly declare the release script's deps

Previously we made the assumption that `mixlib-shellout` is installed
on any machine that would execute the release script.
Add supporting JSON for releasing ChefDK

These files are used by `jenkins/release.rb` when releasing builds to
Omnitruck’s S3 buckets.