test_isolated_networks now raises an exception
If there are less than 4 available nodes on the HaaS, this test
will now raise an exception and fail.
Renamed architecture_json to site_layout_json
Also modified files names.
Also fixed a syntax error in site-layout.json.example.
Noted that deployment tests only support the Dell driver.
Added IPMI object to site-layout.json.example
Includes host, user, and pass.
Node information now stored in a dctionary, and more...
Also fixed delete_networks so that it doesn't fail if a node
isn't on a network.
Added comment to test_isolated_networks about delete_networks
Described why it was important to always run delete_networks.