continue to raise AutoReconnect if some hosts are potential candidates, but can't be reached

Author: dcrosta

pymongo/replica_set_connection.py

@@ -527,6 +527,8 @@ def refresh(self):
                 self.__hosts = hosts
                 break
         else:
+            if errors:
+                raise AutoReconnect(', '.join(errors))
             raise ConfigurationError('No suitable hosts found')
 
         self.__update_pools()