Stop the HTTP Server and IO Loop, shutting down the process

        :param int signal_unused: Unused signal number
        :param frame frame_unused: Unused frame the signal was caught in

def on_sigabrt(self, signal_unused, frame_unused):
        """Stop the HTTP Server and IO Loop, shutting down the process

        :param int signal_unused: Unused signal number
        :param frame frame_unused: Unused frame the signal was caught in

        """
        LOGGER.info('Stopping HTTP Server and IOLoop')
        self.http_server.stop()
        self.ioloop.stop()