Open Stack

Hi shshang, all,

I have some preliminary Horizon diffs available and if anyone
would be kind enough to patch them and try to test the
functionality, I'd really appreciate it.
I know I'm able to create subnets successfully with
the two modes but if there's anything else you'd like
to test or have any other user experience comments,
please feel free to let me know.

The diffs are at -  https://review.openstack.org/74453

Thanks!!