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 (response_headers_) {
    return response_headers_->GetHttpVersion().major_value();
  }
  return 0;
}
uint32_t URLRequest::ResponseHttpVersionMinor() const {
  if (response_headers_) {
    return response_headers_->GetHttpVersion().minor_value();
  }
  return 0;
}
void URLRequest::Close() {
  if (!request_state_.Closed()) {
    request_state_.SetFlag(RequestStateFlags::kClosed);
    if (response_state_.Started()) {
      
      EmitResponseEvent(true, "close");
    }
    EmitRequestEvent(true, "close");
  }
  Unpin();
  if (atom_request_) {
    
    
    atom_request_->Terminate();
  }
  atom_request_ = nullptr;
}
void URLRequest::Pin() {