Audit of our legacy code configuring logging for customer apps.

[ludoch]

Customers moving from java8 gen1 to newer runtimes are facing configuration log settings issue with Cloud Logging,

See https://www.googlecloudcommunity.com/gc/Google-Cloud-s-operations-suite/Structured-in-Logging-in-AppEngine-Flexible/m-p/683711 or https://github.com/stickfigure/blog/wiki/Java-Logging-on-Google-Cloud-Platform

What could we do to better document this or even change a bit our Cloud Logging integration with a new Jetty module that would ease this area?