Will be nice to clear auth credentials. For example, I'm using a proxy that accepts options via username:

```
proxy.com:8080
user: wiliam_country_US
```

So, if I want to change the peer node, I change my username:

```
proxy.com:8080
user: wiliam_country_GB
```

But, I'm not changing the proxy, so electron has valid credentials and is not going to trigger `login` event.

I'm searching the way to clean auth settings so electron asks them again.
atom/browser/api/atom_api_url_request.cc
if (request_state_.Canceled() || request_state_.Closed()) {
    
    return;
  }
  
  request_state_.SetFlag(RequestStateFlags::kCanceled);
  DCHECK(atom_request_);
  if (atom_request_ && request_state_.Started()) {
    
    atom_request_->Cancel();
  }
  EmitRequestEvent(true, "abort");
  if (response_state_.Started() && !response_state_.Ended()) {
    EmitResponseEvent(true, "aborted");
  }
  Close();
}
bool URLRequest::SetExtraHeader(const std::string& name,