I am running signoz on kubernetes, and I wanted to grab the logs delivered by k8sinfra and filter them out based on log level, as there's far too many of them. However, it would appear that they do not have their severity level set. There is a key for severity number and another for severity text, but this is always set to 0 and empty string respectively, even if the body of the logs includes the textual form of this value. The documentation mentions operators, such as the severity_parser, but I'm not entirely sure on how to apply those on the entrypoint of the otelcollector. Is there a suggested method?