Update registry

By popular request: https://github.com/dotcloud/docker-registry/issues/326#issuecomment-42803697

library/registry

@@ -1,6 +1,7 @@
 # maintainer: Joffrey F <[email protected]> (@shin-)
 # maintainer: Sam Alba <[email protected]> (@samalba)
 
-latest: git://github.com/dotcloud/docker-registry@46d75775055efa618e89abfe6a87f1d8767d05eb
+latest: git://github.com/dotcloud/docker-registry@d30962d4a8f8ed1b6001a04e0d9e1ddc3b064eba
 0.6.7: git://github.com/dotcloud/docker-registry@36c4b8283b8598a7c3c969c04f1b81cf55e42d54
-0.6.8: git://github.com/dotcloud/docker-registry@46d75775055efa618e89abfe6a87f1d8767d05eb
+0.6.8: git://github.com/dotcloud/docker-registry@46d75775055efa618e89abfe6a87f1d8767d05eb
+0.6.9: git://github.com/dotcloud/docker-registry@d30962d4a8f8ed1b6001a04e0d9e1ddc3b064eba