[IMP] base_action_rule: add `old_values=None` in context of actions done on create

In particular, when an automated action is defined on "create or update",
setting `old_values` to `None` allows to distinguish between a create and an
update.  Note that not setting `old_values` at all may be confusing: on a
create, it may be present because of an outer update...

0 files changed, 0 insertions, 0 deletions