Detect private DNS zones in Google and skip them until we get to a public zone

certbot-dns-google/certbot_dns_google/dns_google.py

@@ -274,8 +274,9 @@ class _GoogleClient(object):
                 raise errors.PluginError('Encountered error finding managed zone: {0}'
                                          .format(e))
 
-            if zones:
-                zone_id = zones[0]['id']
+            for zone in zones:
+                zone_id = zone['id']
+                if 'privateVisibilityConfig' not in zone:
                     logger.debug('Found id of %s for %s using name %s', zone_id, domain, zone_name)
                     return zone_id