Logging improvement - Configuration

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. Enable the /loggers endpoint in our application.properties file by adding the following lines:
   management.endpoints.web.exposure.include=loggers
   management.endpoint.loggers.enabled=true

3. The version of the folio-spring-base should be updated (see )

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

AС
The property file and all logging commands are adjusted.