Prefix idn topic with 'E5025|' before firmware version.

src/pyartemis/cryo/cryo_levels.py

@@ -132,7 +132,7 @@ async def e5025_readout_loop(mqtt_client: aiomqtt.Client,
     cryo_e5025_logger.info(f'{tn}.{cn}.{fn}: Using {com_interface}')
     try:
         response: str = await e5025_transaction(mqtt_client, com_lock, com_interface, command='V')
-        idn: str = response[2:].split('V*', 1)[0]
+        idn: str = 'E5025|' + response[2:].split('V*', 1)[0]
         await mqtt_client.publish(cryo_globals.topic_prefix + '/e5025/idn', payload=idn, retain=True)
     except Exception:
         await mqtt_client.publish(cryo_globals.topic_prefix + '/e5025/idn', payload='NA', retain=True)