MINOR: http-rules: Make set/del-map and add/del-acl custom actions

MINOR: http-rules: Make set/del-map and add/del-acl custom actions

Now, these actions use their own dedicated function and are no longer handled
"in place" during the HTTP rules evaluation. Thus the action names
ACT_HTTP_*_ACL and ACT_HTTP_*_MAP are removed. The action type is now mapped as
following: 0 = add-acl, 1 = set-map, 2 = del-acl and 3 = del-map.