= akka-*: full name space for loggers - resolve #16138

I think `Logging(system, getClass)` should work here because of [this](https://github.com/akka/akka/blob/60ab0fb3d0fb069b6aada2f6df042e5156663c9c/akka-actor/src/main/scala/akka/event/Logging.scala#L295) implicit. If it does, please change here and elsewhere.