See SSOSUP-678 .

This is about backport of Kerberos/LDAP related fixes (will be probably good to backport both together as they are related to each other and I know that RH-SSO customers asked for both in the past):

• https://github.com/keycloak/keycloak/commit/6f989fc1
• https://github.com/keycloak/keycloak/commit/57e51e9d