Updated openstack/openstack
Project: openstack/heat  a63ba7db5b1fc968b973db5415d29c7664450297
null
Using resolving properties for update

For definition reference in template we should use built-in functions.
So template after parsing with resolve_static_data will contain
references on these functions instead resolve values.
If we want get some information about previous state of stack during
update, we should use self.properties instead of self.t['Properties'].
Also default=[] was added to avoid error when we try to do set([]).

Closes-bug: #1292495
Change-Id: I0cc44a0a541913cca665caec1a7f3a2a1a6cebc9