Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Abhijit Hiremagalur:
     Remove accidentally added cucumber feature ( Travis started: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/26345968 )
     Try caching bundled gems between Travis builds ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/26337951 )
     Re-order before/after scripts ( Travis Unknown )
     Stop installing faraday in Travis ( Travis Unknown )
     Move db creation into rake tasks ( Travis Unknown )
     Remove unused references to oracle in .travis.yml ( Travis Unknown )
     Remove unused argument ( Travis Unknown )
     Explain why we use non_transactional isolation in service_broker_spec ( Travis Unknown )
     Consolidate rubocop and api specs ( Travis Unknown )

Signed-off-by: James Myers <jmyers@pivotallabs.com>