[2.3.0] Checkmk Werk 16121 created: Fixed CMC crash when sending illegal metrics to InfluxDB

[//]: # (werk v2) # Fixed CMC crash when sending illegal metrics to InfluxDB key | value ---------- | --- date | 2024-08-14T14:17:10+00:00 version | 2.3.0p13 class | fix edition | cee component | cmc level | 1 compatible | yes When the CMC tried to send to a metric to an InfluxDB where the metric name was malformed (e.g. starting with an underscore), the CMC crashed. This has been fixed, such metrics are now simply forwarded to the InfluxDB. The latter will probably be a bit unhappy about such metric names, but this can be figured out via its logs, and the corresponding check can be fixed. Note that in a future Checkmk version, we will probably drop such metrics silently, logging this only for higher log levels to avoid log spam at the default log settings.