LOG4J2-42 - Create an appender to route log events to the ServletContext log.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1601789 13f79535-47bb-0310-9956-ffa450edef68
Change status level to off

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1601791 13f79535-47bb-0310-9956-ffa450edef68