Hi,

First of all, thank you for this amazing exporter.

docker run -p 9080:8080 -e ENDTOEND_ENABLED=true -e KAFKA_TLS_ENABLED=true -e KAFKA_BROKERS=b-1.xxxxx.amazonaws.com:9094 vectorized/kminion:v2.2.1

But the end to end monitoring is not working because the yaml config says endToend and in the config parser, all config is converted to small case.

Would it help to change the endToEnd to endtoend ?