Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  James Myers:
     Merge remote-tracking branch 'origin/pr/214' ( Travis Unknown )
     Merge remote-tracking branch 'origin/pr/211' ( Travis Unknown )
  Max Brunsfeld:
     cc <-> diego stager is now publish/subscribe ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/24052908 )
  fraenkel:
     Checks that the file size is within limits before adding to the blobstore ( Travis Unknown )
     Use a proper domain name regex ( Travis Unknown )

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