Support for Python 3.8 has been removed. Now the minimum python versionsupported is 3.9 .

Fixes cases where theironic-neturon-agent could enter a state whereit is no longer operating properly by forcing the agent to exit when“hard” communication failures occur which cannot be retried automatically.This allows the service runner to understand a failure has occured andto restart the agent. The process exit is self-triggered by the agentthrough the use of the SIGABRT signal to indicate non-normal processtermination.