FELIX-3935 - Testcases for JAAS integration

Adding testcases for following scenarios
-- passing of OSGi config to JAAS LoginModule options
-- Ordering of LoginModule based on config ranking

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1459177 13f79535-47bb-0310-9956-ffa450edef68