reconfigure causes crash

[bmario]

Sep 27 13:30:45 igel metricq-combinator[87563]: [2022-09-27 13:30:45.237325247 CEST][metricq][DEBUG]: sending rpc: transformer.subscribe
Sep 27 13:30:45 igel metricq-combinator[87563]: [2022-09-27 13:30:45.239253565 CEST][metricq][DEBUG]: sending reply '{}' to metricq-wizard-backend-rpc / metricq-rpc-py-metricq-wizard-backend-a3ca4909bc0b42318c0b42318c34bb4c08fe6c8b
Sep 27 13:30:53 igel metricq-combinator[87563]: [2022-09-27 13:30:53.026086758 CEST][metricq][DEBUG]: Management message received: {"dataServerAddress": "amqps://rabbitmq.metricq.zih.tu-dresden.de:5671/data", "dataQueue": "tr [...]
Sep 27 13:30:53 igel metricq-combinator[87563]: [2022-09-27 13:30:53.046347471 CEST][metricq][DEBUG]: start parsing data config
Sep 27 13:30:53 igel metricq-combinator[87563]: [2022-09-27 13:30:53.046384301 CEST][metricq][DEBUG]: data connection already exists
Sep 27 13:30:53 igel metricq-combinator[87563]: [2022-09-27 13:30:53.046398669 CEST][metricq][FATAL]: changing dataServerAddress on the fly is not currently supported
Sep 27 13:31:28 igel systemd[1]: metricq-combinator-lzr.service: Main process exited, code=dumped, status=6/ABRT
Sep 27 13:31:28 igel systemd[1]: metricq-combinator-lzr.service: Failed with result 'core-dump'.
Sep 27 13:31:28 igel systemd[1]: metricq-combinator-lzr.service: Consumed 3d 4h 46min 3.584s CPU time.
Sep 27 13:42:24 igel systemd[1]: Started MetricQ combinator for LZR.

It seems that the manager send a different dataServerAddress than before.