Bump src/code.cloudfoundry.org/gorouter
Bump src/code.cloudfoundry.org/gorouter

Bump
  Hector Rivas Gandara:
     Ensure that header rewriters are canonicalize
     Add http_rewrite.responses.remove_headers
     Change config struct for http_rewrite
[finishes #161801564]

Signed-off-by: Zachary Gershman <3025e35db44f20e0f186af1fead3044efb259b43@pivotal.io>
Co-authored-by: Zachary Gershman <3025e35db44f20e0f186af1fead3044efb259b43@pivotal.io>

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