JBQA-8828: added test case for Kerberos authetication for PicketLink IDP
JBQA-8828 Kerberos authetication for PicketLink IDP - updated explicit BC provider, removed obsoleted method causing NPE
JBQA-8828: Fixed Kerberos IPv6 issues in the test setup
JBQA-8828: Kerberos IdP testcase - updated for WildFly 8