How to configure JDBC appender for log4j2 ?

Doc Notes:

FOR QA:

MR: https://gitlab.cee.redhat.com/jboss-fuse-documentation/fuse7/merge_requests/580
Preview: https://pnt-devops-rad-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/ccs-mr-preview-prod/7574/artifact/docs/deploying-into-apache-karaf/preview/index.html#configuration_files

Document: https://access.redhat.com/documentation/en-us/red_hat_fuse/7.4/html/deploying_into_apache_karaf/fesbfabricmavenindexer#configuration_files

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Fuse 7 is now using log4j2 and the configuration works differently.
There are no examples for adding a JDBC appender in the new format.
Please advise how to configure the JDBC appender.