* Checked using https://github.com/myii/ssf-formula/pull/131

```bash
Examining apt-cacher/map.jinja of type state
[203] Most files should not contain tabs
apt-cacher/map.jinja:5
        'interface': 'False'
```

This reverts commit e4d1e7de10.
Sry, I was on the wrong branch.

The key is always null and thus localhost is always used no matter
way. This correction lets users specify the apt-cacher host.