edit /bin/test to build ginkgo from vendor
edit /bin/test to build ginkgo from vendor

- previously was pulling in the newest ginkgo
- this was a problem because the test source used the vendor'd version,
which caused a mismatch

Signed-off-by: Renee Chu <dbb10253d556b7398455fa674afa4c4a5a96979a@pivotal.io>
Signed-off-by: Matthew Boedicker <bd646ec310948bf2f36146b5501a0018bf548d0d@pivotal.io>

cloudfoundry/cli,cloudfoundry/cli,cloudfoundry/cli