[LOG] resolved log4j issues

Resolved with a dirty hack. Lets see how long this will went well.

Change-Id: Ibbbf5028975009929ec62c836050121ca13c2e83
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1368
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>