openstack-full/spice: patch to support wss

A patch is needed to make WSS (Spice with HTTPS) and is not yet merged
upstream.
Let's patch spice-console while it moves to maintream.

http://www.spinics.net/lists/spice-devel/msg08075.html

Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>