Investigate sending Wildfly/Keycloak audit logs to stdout

[hkeeler]

As mentioned on #193 (comment), it'd be nice to the the Keycloak's Wildfly audit logs going to stdout like the rest of the logs. As it stands now, they all go to file, and thus trapped in the container.

[hkeeler]

I think I have this figured out. Keycloak already does log all login events, however, non-error events are being logged at DEBUG, but rootLogger is at INFO. We have a couple options:

We could just bump the rootLogger to DEBUG, but that'd likely bring in a bunch of other DEBUB-level logs we're not interested in, and it'd likely involve further logging config to get it turned jus right.

A better way seems to be to override the default eventListener with something like:

<spi name="eventsListener">
  <provider name="jboss-logging" enabled="true">
    <properties>
      <property name="success-level" value="INFO"/>
      <property name="error-level" value="WARN"/>
    </properties>
  </provider>
</spi>

Check out the following for further details on Keycloak's event listener:

• http://www.keycloak.org/docs/latest/server_admin/index.html#event-listener

[hkeeler]

This issue is less critical than #210. I'm swapping these two issues in the 1.21.0 release.