AME-4774 CR-4676 Introduce IPrivilegeManager interface

git-svn-id: https://svn.forgerock.org/openam/trunk@10777 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
OPENAM-4545 CR-4652 Data store updated to be able to locate new-style policy rules from the privilege's name and realm

git-svn-id: https://svn.forgerock.org/openam/trunk@10780 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d