tested that if the file doesn't exist `authoritativeKeyserverID` is `256` and it is possible to logout and back in
Tested that if the file exists and `authoritativeKeyserverID` is correctly set
Checked that
```
const {
authoritativeKeyserverID: keyserverID,
// $FlowExpectedError: file might not exist
} = require('./facts/authoritative_keyserver.json');
```
throws if the file doesn't exist, so `authoritativeKeyserverID` is not being set to `undefined`