Enforce a specifc bundler version on CI and local machine
Enforce a specifc bundler version on CI and local machine

[#97772836]
https://www.pivotaltracker.com/story/show/97772836

Signed-off-by: Jamil Shamy <1a6c312d8b7ebde5d54d0b4f1a4353b7c149e3bf@pivotal.io>

barthy1/bosh,barthy1/bosh,barthy1/bosh,barthy1/bosh