Trying to test this out and I'm not sure how common this is in the wild, but none of the environments I have access to has a network service:

```
Fog::Errors::NotFound: Could not find service network.  Have compute, identity, image, volume
```

I could see this being potentially problematic for some users. The `openstack_network_name` option was added so some people with OpenStack deployments with base network names other than "public" and "private" could tell Kitchen what to look for after server creation, not so much to control the server provisioning. Are you doing something where it's important to control the NICs a server comes up with?