Add option to use containernet over mininet
Add option to use containernet over mininet

The option is commented out. We'll evaluate which approach is better
for our purpose.

jonvestal/open-kilda,carmine/open-kilda,jonvestal/open-kilda,nikitamarchenko/open-kilda,telstra/open-kilda,carmine/open-kilda,carmine/open-kilda,telstra/open-kilda,jonvestal/open-kilda,carmine/open-kilda,jonvestal/open-kilda,nikitamarchenko/open-kilda,nikitamarchenko/open-kilda,nikitamarchenko/open-kilda,jonvestal/open-kilda,telstra/open-kilda,telstra/open-kilda,telstra/open-kilda,carmine/open-kilda,carmine/open-kilda,telstra/open-kilda,telstra/open-kilda,nikitamarchenko/open-kilda,nikitamarchenko/open-kilda