Check A Venue Is Up.

        https://starfighter.readme.io/docs/venue-healthcheck

def venue_healthcheck(self):
        """Check A Venue Is Up.

        https://starfighter.readme.io/docs/venue-healthcheck
        """
        url = urljoin(self.base_url, 'venues/TESTEX/heartbeat')
        return self.session.get(url).json()['ok']