Hrm, we probably need to set the ```@use_ml2``` variable :-)
This should be done by adding two lines: one after https://github.com/rossella/barclamp-nova_dashboard/blob/release/roxy/master/chef/cookbooks/nova_dashboard/recipes/server.rb#L257 and one after https://github.com/rossella/barclamp-nova_dashboard/blob/release/roxy/master/chef/cookbooks/nova_dashboard/recipes/server.rb#L321