Add client method new_with_connector

[ernestas-poskus]

This allow to create HttpsConnector with hyper's default HttpConnector reason behind this is extra configuration for HttpConnector like set_nodelay and new set_local_address https://github.com/hyperium/hyper/blob/master/src/client/connect.rs#L254

cc @seanmonstar

[witchof0x20]

+1 This would also be helpful for using connectors such as SOCKS proxies.

[ernestas-poskus]

cc @seanmonstar please advise how to proceed with this change, you have released new version with new new_ private function on HttpsConnector.. For my use case I need to pass constructed HttpConnector to this struct because I set additional configuration on it such as

        let mut http_connector: HttpConnector =
            HttpConnector::new_with_executor(executor.clone(), None);
        http_connector.set_keepalive(self.hyper_keep_alive_timeout);
        http_connector.set_nodelay(self.hyper_no_delay);
        http_connector.enforce_http(self.hyper_enforce_http);

[seanmonstar]

Sorry I forgot about this! It seems what you want to do can be done with the from constructor. HttpsConnector::from((http, tls)).

[ernestas-poskus]

Awesome :+1: