Logging configuration support

[zdehz]

As I user, I would like to configure logging by specifying a logging framework (eg. log4j, log4j2, logback) and a configuration. Some of the logging framework libraries can also be included in the lib jars.

[mesutcelik]

I agree but first the support has to be added to docker side.. related issue for hazelcast-jet --> https://github.com/hazelcast/hazelcast-jet-docker/issues/13

[horakihor]

+1 This feature would be very helpful for the Hazelcast Cloud Team. It makes a process of parsing logs and sending them to the central repository very straightforward. Instead of supporting different log formats, supporting different parsers, we can simply write logs in JSON on all our components and send them directly to the central place.