allow logging to stdout in production env

[teadur]

For example, currently log destination in production env is locked to syslog at the application level. It means that any divergence require altering configuration file and repository. For example, I cannot run the app in production on my local machine and see logs in stdout. In the same way if you decide to redirect logs to some other location than syslog, you again need to go through our development pipeline, instead of just redirecting stdout to that destination.

It's described in detail in those two articles.

Originally posted by @artur-beljajev in https://github.com/internetee/registry/pull/1374#issuecomment-552202766