Log rework

[MiroslavRepka]

This PR implements a feature described in #622. It also clarifies/adds some additional logs, as in the info level, a lot of information is no longer visible.

Moreover, in the debug level, the kubectl logs are now visible, with cluster ID prefix.
Example:

2:48PM INF services/kuber/server/server.go:60 > Setting up the longhorn on the cluster miro-cluster-s87luix module=kuber
miro-cluster-s87luix     namespace/longhorn-system created
miro-cluster-s87luix     podsecuritypolicy.policy/longhorn-psp created
miro-cluster-s87luix     serviceaccount/longhorn-service-account created
miro-cluster-s87luix     configmap/longhorn-default-setting created
miro-cluster-s87luix     configmap/longhorn-storageclass created

closes #622

[cloudziu]

Great job with the PR. I left few comments, some of them are regarding the log linguistic correctness 😅 - but I think this can be a completly separate task, I will leave the decision to you. Others are about log level in some point that I'm not sure about. Once again awesome job! 😄

[cloudziu]

LGTM 👍