Addressed PR #54 comments
Addressed PR #54 comments

[#120520321]

mattcui/bosh-softlayer-tools,maximilien/bosh-softlayer-stemcells,cloudfoundry-community/bosh-softlayer-tools,cloudfoundry-community/bosh-softlayer-tools,mattcui/bosh-softlayer-tools,maximilien/bosh-softlayer-stemcells