Updated openstack/openstack
Project: openstack/heat  000ecbf0c837718ecd7f3e5fa600b1610ed697c6

Reuse disable_rollback on stack update

If disable_rollback API parameter is not supplied to stack update,
use corresponding value of existing stack.

Change-Id: Iad60e12d31dc3850071dc0b8562c7b99f53adba4
Closes-Bug: #1324366