title: How do you use an HTTP/HTTPS proxy with boto3?
body: <p>On the old <code>boto</code> library is was simple enough to use the <code>proxy</code>, <code>proxy_port</code>, <code>proxy_user</code> and <code>proxy_pass</code> parameters when you open a connection. However, I could not find any equivalent way of programmatically define the proxy parameters on boto3. :(</p>