[security-services] WS-Security Schema

Title: WS-Security Schema

It has been stated by several people in this TC that there is no schema for WS-Security, which I thought was true. However, Chris Kaler pointed out to me that there is one here:

http://schemas.xmlsoap.org/ws/2002/04/secext/

It is obscure because it is listed along with a number of old ones, so it is not obvious that a new one is being proposed.

Hal