Fix for OPENAM-2098, review CR-3959: ssoadm.jsp create-xacml throws NPE with valid policyset

git-svn-id: https://svn.forgerock.org/openam/trunk@9862 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
OPENAM-4089. Session upgrade via REST updated to be consistent with LVB. Review: CR-4056

git-svn-id: https://svn.forgerock.org/openam/trunk@9863 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d