Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Eric Malm:
     Remove obsolete controller collection tests ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19597899 )
     Add routes list scoped to space ( Travis Unknown )

Signed-off-by: Eric Malm <emalm@pivotallabs.com>