groundcrew properties fix (#120)
groundcrew properties fix (#120)

According to https://github.com/concourse/concourse/blob/master/jobs/groundcrew/spec
There is no properties that are under a `groundcrew` level
cloudfoundry-incubator/bosh-google-cpi-release,evandbrown/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release,evandbrown/bosh-google-cpi-release,evandbrown/bosh-google-cpi-release,evandbrown/bosh-google-cpi-release