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/net/atom_url_request.cc
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
  if (!request_) {
    return;
  }
  DCHECK_EQ(request, request_.get());
  scoped_refptr<net::HttpResponseHeaders> response_headers =
      request->response_headers();
  const auto& status = request_->status();
  if (status.is_success()) {
    
    content::BrowserThread::PostTask(
        content::BrowserThread::UI, FROM_HERE,
        base::Bind(&AtomURLRequest::InformDelegateResponseStarted, this,
                   response_headers));
    ReadResponse();
  } else if (status.status() == net::URLRequestStatus::Status::FAILED) {
    
    DoCancelWithError(net::ErrorToString(status.ToNetError()), true);
  }
  
}
void AtomURLRequest::ReadResponse() {
  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
  int bytes_read = -1;
  if (request_->Read(response_read_buffer_.get(), kBufferSize, &bytes_read)) {
    OnReadCompleted(request_.get(), bytes_read);
  }
}
void AtomURLRequest::OnReadCompleted(net::URLRequest* request, int bytes_read) {