Envoy logging

Hi! Excuse me for my language. English isn’t native for me. Me need modify logging rules for Envoy proxy likes instruction Istio / Getting Envoy's Access Logs. The version istioctl hasn’t “install param”.

The istio addon included in MicroK8s is v1.5. The documentation of istio that you are referring to might not apply to v1.5.
We hope to update the addon in the next release.

Thanks! I installed early release of Microk8s and reached goal.