Fluent bit parsing error with json_rpc logs

It looks like the json_rpc.log is causing some issues with its multiline parsing. Occasionally this seems to get out of sync so we keep ending up with stdout lines that are from a multiline message but just as individual randoms.

It may also be related to embedding new line characters in the log message as well, ideally we should remove these.

This was discovered when deploying the Loki stack which allowed us to filter the logs and visualise them a lot more: https://grafana.com/docs/loki/latest/installation/helm/#deploy-loki-stack-loki-fluent-bit-grafana-prometheus

helm repo add grafana https://grafana.github.io/helm-charts

kubectl create namespace logging

helm upgrade --install loki --namespace=logging grafana/loki-stack   --set fluent-bit.enabled=false,promtail.enabled=true,grafana.enabled=true,prometheus.enabled=true,prometheus.alertmanager.persistentVolume.enabled=false,prometheus.server.persistentVolume.enabled=false