Add GOPATH/bin to PATH properly
Add GOPATH/bin to PATH properly

Signed-off-by: Ted Young <66c8979f4bb24f9b49cd80cbed4f06a51450d4f8@pivotallabs.com>

cloudfoundry-incubator/cf-test-helpers,cloudfoundry-incubator/cf-test-helpers,nttlabs/cf-test-helpers,nttlabs/cf-test-helpers