engine,restapi:Enable Gluster Hooks-types & constants defined

ActionGroup, ObjectType and LogType enum values added
for enable gluster hook.
Added role action mapping for "Manipulate Gluster Hook"
ActionGroup

Added enum value for MANIPULATE_GLUSTER_HOOK in PermitType

Change-Id: I9bd64caf28ac67c8bba5146d97cd7c17fa4c0899
Signed-off-by: Sahina Bose <sabose@redhat.com>