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

Bump
  Aidan Obley:
     teach panic handler to allow abort handler errors
     convert errors from string to type error
  Clay Kauzlaric:
     teach gorouter to stay healthy after abort handler
[finishes #163314775]

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