Problem:

The horizon-operator currently creates pods that log everything to stdout and stderr. This isn't the best practice for Kubernetes applications as described by:

https://kubernetes.io/docs/concepts/cluster-administration/logging/#cluster-level-logging-architectures

Desired State

All Apache and Horizon logs should be written to their own files that are then tailed by sidecar containers, rather than writing to stdout and stderr. This allows for log management that is independent of the application and ensures availability of logs for debugging purposes if the application crashes.