add ruby 2.3 to bosh unit and integration pipeline
add ruby 2.3 to bosh unit and integration pipeline

[#117398595](https://www.pivotaltracker.com/story/show/117398595)

Signed-off-by: Christopher Brown <eb0819782e2e967e3d4f4d71eab0c647ed2659cf@pivotal.io>

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