Add a specialized get_unique() to Network
Add a specialized get_unique() to Network

When called as Network.get_unique(session, id) then it automagically
accepts either an IP address, an IP address with netmask, or a network
name as the id parameter.

Reviewed-By: Scott DAquila <8944595b0f0af46f2d3de382b750727aac9e5fa7@ms.com>

quattor/aquilon,guillaume-philippon/aquilon,guillaume-philippon/aquilon,quattor/aquilon,stdweird/aquilon,quattor/aquilon,stdweird/aquilon,stdweird/aquilon,guillaume-philippon/aquilon