How tests should look like (draft)
Modify existing tests to use new template

Change-Id: I4225bf856c70c5563cbe62051081b2e3de7d64cc
Adds separated tests from virtual network
Improves unit tests for network ipam
Improves unit tests for physical router
Fix small issues and add pep8 env to tox

Change-Id: Ic6572c85d5f847c744be41850246517f4d25ee90
Merge pull request #5 from jswiders/vn_tests

Vn tests