Purpose/Overview:
Logging should be improved for more productive troubleshooting.

Requirements/Scope:

1. Check that log4j2.properties doesn't exist or it is aligned with https://folio-org.atlassian.net/wiki/display/DD/Folio+logging+solution

2. Add step "Check logging" to PULL_REQUEST_TEMPLATE.md

AС
The property file and all logging commands are adjusted.