Bump cloudfoundry/gorouter:
  Alex Suraci and Mark Rushakoff:
     Reorganize methods in router ( Travis Success: https://travis-ci.org/cloudfoundry/gorouter/builds/10298389 )
     README tweaks ( Travis Unknown )
     Extract makeRouteEndpoint for router ( Travis Unknown )
     Fix go vet complaints ( Travis Unknown )
     put proxy and varz into sub-packages ( Travis Success: https://travis-ci.org/cloudfoundry/gorouter/builds/10297910 )
     fix pruning bug that would result in zombie routes ( Travis Success: https://travis-ci.org/cloudfoundry/gorouter/builds/10295508 )
     fix main ( Travis Success: https://travis-ci.org/cloudfoundry/gorouter/builds/10290708 )
     split router package into smaller packages (wip) ( Travis finished: https://travis-ci.org/cloudfoundry/gorouter/builds/10287473 )
     extract router endpoint logic into EndpointPool ( Travis Unknown )
     fix some flakiness in integration spec ( Travis Unknown )
  Alex Suraci:
     fmt ( Travis finished: https://travis-ci.org/cloudfoundry/gorouter/builds/10282739 )
     log by url when pruning stale droplets ( Travis Unknown )
     log to /dev/stderr when running tests ( Travis Unknown )
     fix a few flaky tests, have .Run not block forever ( Travis Unknown )
  Mark Rushakoff and Tim Labeeuw:
     Rename remaining references to backend where possible ( Travis Success: https://travis-ci.org/cloudfoundry/gorouter/builds/10223171 )
     Add X-Cf-RouteEndpoint header ( Travis Unknown )
     Rename Backend -> RouteEndpoint, expand other small variable names ( Travis Unknown )
     Move URIs to their own file ( Travis Unknown )
     Move backend to its own file ( Travis Unknown )
Bump cloudfoundry/yagnats:
  Alex Suraci:
     remove funky circular client/connection contract ( Travis Success: https://travis-ci.org/cloudfoundry/yagnats/builds/10313710 )
     connection: when closed, ErrOrOK returns an error ( Travis Failed: https://travis-ci.org/cloudfoundry/yagnats/builds/10282710 )