Network API rev 3 - NetworkInterface Collection (routes)
Network API rev 3 - Network Collection (routes)
Network API rev 3 - Subnet Collection (routes)
Network API rev 3 - Collection helpers (passing context to views - check for presence of resource)
Network API rev 3 - Models (Network, Subnet, NetworkInterface, Instance)
Network API rev 3 - NetworkInterface Views (haml)
Network API rev 3 - Network Views (haml)
Network API rev 3 - Subnet Views (haml)
Network API rev 3 - Updated Instance Views (haml)
Network API rev 3 - Mock Driver implementation
Network API rev 3 - Mock Driver fixtures (yaml)
Network API rev 3 - OpenStack Driver implementation
Network API rev 3 - RHEV-M Driver implementation
Network API rev 3 - EC2 Driver implementation
Add JSON responses to Network and Subnet models

Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>
Fix Network and Subnet create routes for JSON

Creating a network or subnet whilst using "Accept: application/json"
resulted in an exception because of the missing `xml_to_json` method in
the routes for JSON responses.

Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>
JSON support for network_interface model

Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>