Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Aram Price:
     Rake tasks should not blow up if rubocop is not loaded ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/21794709 )
     Add :rubocop rake task, run as a dependency of :spec task ( Travis started: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/21793787 )
     Fix rubocop violation ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/21793353 )
  aram price:
     Merge pull request #191 from sykesm/patch-1 ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/21792078 )
  Matthew Sykes:
     Call out rubocop for static code analysis ( Travis Unknown )