fix: update gorouter package spec
fix: update gorouter package spec

Co-authored-by: Aidan Obley <2667fa8e8663c9d9f622cbe0896041b5635a919f@pivotal.io>

cloudfoundry-incubator/cf-routing-release,cloudfoundry-incubator/cf-routing-release,cloudfoundry-incubator/cf-routing-release