modify the default url of noVNC

i had sync the all repos of devstack for installing in intranet
environment, and found the url of noVNC had changed to
https://github.com/novnc/noVNC. This module upgrade from individual to
an organization. the old url had redirect to the new one.

Change-Id: I19fc1e2ad30dcd97cad232c9ad58f53a523616b4
1 file changed