Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Graeme Davison:
     Return a bad request when the default quota is missing ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/31182439 )
     Log any unexpected error that causes EM to exit ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/31164822 )
  Max Brunsfeld:
     Eager load all app associations in bulk apps controller ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/31098732 )
     Eager load apps' current droplets in bulk apps controller ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/31097759 )
  Michael Fraenkel:
     Make the request bodies look pretty ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/31097634 )

Signed-off-by: Michael Fraenkel <fraenkel@us.ibm.com>