How to write only server startup message to specific log file ?

Issue

• We are currently running on JBoss EAP 4 and we have our jboss-log4j.xml setup to direct startup output to a separate log file (my_status.log). This allows us to automate detection of server startup.

We are migrating to JBoss EAP 6.2.0 and wish to replicate this functionality.

<appender name="MY-FILE" class="org.apache.log4j.FileAppender">
    <param name="File" value="${jboss.server.home.dir}/log/my_status.log"/>
    <layout class="org.apache.log4j.PatternLayout">
       <param name="ConversionPattern" value="%d %-5r %-5p [%c].%M %m%n"/>
    </layout>
  </appender>

<category name="org.jboss.system.server.Server" additivity="true">
    <priority value="INFO"/>
    <appender-ref ref="MY-FILE"/>
  </category>

In JBoss EAP 4 we can specify "org.jboss.system.server.Server" in the logging configuration. What can we use in EAP 6.2 to accomplish the same thing?