OPENAM-8421 - refactor-out a few local variables that can be substituted with WebtopNaming class' methods
AME-7718 CR-7844 allows OpenAM servers to be added and removed from the cluster without a required restart.
AME-5556 CR-6276 CR-6058 CR-6048 CR-6047 CR-6045 introduces refactoring and cleanup around Session and SessionService code base