Revert "Upgrade to Ruby 2.2.2"
Revert "Upgrade to Ruby 2.2.2"

- Due to issues with updating the docker images that our CI
  utilizes, it is best to hold off on this change for now

[#99131116]

This reverts commit 6c187521b4ce171dd4f59125bd7586d15bf533ee.

cloudfoundry/buildpack-packager,cloudfoundry-incubator/buildpack-packager