I think it is, but since the driver has been shipped in previous fog releases we may wanna keep backwards compat for a couple of releases at least I'd say.

We can add something like:

```ruby
def ip_address
  Fog::Logger.warning("ip_address has been deprecated. Use public_ip_address instead")
  public_ip_address
end
```

Dunno if there's a better way of doing it currently.