Limit max number of connections to log area (#250)

cli/src/etos_client/downloader/downloader.py

@@ -195,7 +195,8 @@ def __print_traceback(self, value: Exception) -> None:
     def run(self) -> None:
         """Run the log downloader thread."""
         self.started = True
-        with ThreadPool() as pool:
+        # 10 is the default max number of connections in Python requests library
+        with ThreadPool(10) as pool:
             while True:
                 if self.__exit and not self.__clear_queue:
                     self.logger.warning("Forced to exit without clearing the queue.")