This patch adds IPSet CRUD operations under the security module.
This patch also adds a util method for IPSets to return reference
dict for IPSet objects.
Change-Id: Ie5157055e80ec1976159cabc172d8285314570c4
Adding support for IP pool create/delete/get actions,
and also allocate & release IPs from the pool
Change-Id: Ieac0aad2268cffa9d4fb5b521ebec268f2b408f3