[KARFA-2082] Ignore the jaas test for now till we've a fix

Signed-off-by: Andreas Pieber <anpieber@gmail.com>

git-svn-id: https://svn.apache.org/repos/asf/karaf/branches/karaf-2.3.x@1435500 13f79535-47bb-0310-9956-ffa450edef68