AMQP: Attemt to reconncet to broker if connection is lost0
The VILLAScontroller should attempt to reconnect to the AMQP broker if the connection is lost for some reason. If this happens, we get a warning in the controller that looks like this:
2021-08-24 09:29:26 | WARNING | villas.controller.controller | Caught exception 'Server unexpectedly closed connection'
but the connection is not re-created again - even though the broker is up and running.