Update for libbuildpack changes
Update for libbuildpack changes

- Check that the app actually deploys when running no internet/proxy tests.

[#158774977]

Signed-off-by: Leah Hanson <59915d4d5a651c1df4fd522b917423b47c84f68b@pivotal.io>

cloudfoundry/go-buildpack,cloudfoundry/go-buildpack,cloudfoundry/go-buildpack