def _add_discovery_config(self):
lookup_key = (discovery_service.DiscoveryService.API_CONFIG['<STR_LIT:name>'],<EOL>discovery_service.DiscoveryService.API_CONFIG['<STR_LIT:version>'])<EOL>self._configs[lookup_key] = discovery_service.DiscoveryService.API_CONFIG<EOL>
Add the Discovery configuration to our list of configs.

        This should only be called with self._config_lock.  The code here assumes
        the lock is held.