retrieve the current selenoid host info
        request: http://<username>:<password>@<ggr_host>:<ggr_port>/host/<ggr_session_id>
        :return: dict

def get_selenoid_info(self):
        """
        retrieve the current selenoid host info
        request: http://<username>:<password>@<ggr_host>:<ggr_port>/host/<ggr_session_id>
        :return: dict
        """
        host_url = '{}/host/{}'.format(self.server_url, self.session_id)
        try:
            selenoid_info = requests.get(host_url).json()
        except Exception:
            return None
        self.driver_wrapper.logger.info('Selenoid host info: \n %s' % selenoid_info)
        return selenoid_info