KNL-1095 Add new API AuthzGroupAdvisor

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@129704 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1095 Add new API AuthzGroupAdvisor

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@129705 66ffb92e-73f9-0310-93c1-f5514f145a0a