Bump src/cloud_controller_ng

Removed `api_version` from CC BOSH template

Bump cloudfoundry/cloud_controller_ng:
  Ruth Byers:
     Remove double newline ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20499143 )
     Use constant in the code for API version instead of config ( Travis Unknown )
  Phan Le:
     Revert "Add vcap_application to start messages sent from CC -> DEA." ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20499134 )
     Add vcap_application to start messages sent from CC -> DEA. ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20496194 )
     Add space name and space guid to the VCAP_APPLICATION env. ( Travis Unknown )
  Matthew Sykes:
     Remove deprecated trial_db related code from CC. ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20489683 )
  Tammer Saleh:
     Group specs ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20473612 )
     Proper use of let instead of before blocks in specs ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20472938 )
  Derek Richard:
     Merge pull request #167 from nota-ja/move-user-provided-service-instance-spec ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/20472375 )
  Noburou TANIGUCHI:
     Move user_provided_service_instance_spec.rb from spec/models/runtime/ to spec/models/services/ ( Travis Unknown )

Signed-off-by: Chris Adams <cadams@pivotallabs.com>