Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Tammer Saleh:
     Move specs to match implementation ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19280646 )
     LocalAppBits => CloudController::Blobstore::LocalAppBits ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19280153 )
     IdempotentDirectory => CloudController::Blobstore::IdempotentDirectory ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19279764 )
     Use English or instead of || for clarity ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19278997 )
     FingerprintsCollection => CloudController::Blobstore::FingerprintsCollection ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19278581 )
     Cdn => CloudController::Blobstore::Cdn ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19277971 )
     CloudController::BlobstoreUrlGenerator => CloudController::Blobstore::UrlGenerator ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19277435 )
     BlobstoreDirectory => CloudController::Blobstore::Directory ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19276888 )
     Rename Blobstore to Client so it can be namespaced properly ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19276307 )
     Remove unused code ( Travis Unknown )
     Removed the backtrace from the ErrorPresenter ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19156048 )
     Revert "Add an error to job presenter if job failed" ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19153044 )
  Abhijit Hiremagalur:
     Only create directory/bucket if it does not exist already ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19229520 )
     Extract BlobstoreDirectory and wire-in ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19208483 )
  Ruth Byers:
     Add Jobs::Enqueuer ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19228623 )
     Hide error types when not returning an api or services error ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/19227458 )
     Add column to store api error information ( Travis Unknown )
     Hide error_code, backtrace and message from API responses for unknown errors ( Travis Unknown )
     Clean up exception code [#66023630] ( Travis Unknown )
     Move error hash sanitization into presenter ( Travis Unknown )

Signed-off-by: Abhijit Hiremagalur <abhi@pivotallabs.com>