Updated openstack/openstack
Project: openstack/heat  16e767b271b0f54817944fc195b6a8f4fe3a486e

Do not attempt a stack update when it is deleting

If a stack is in any delete state(inprogress, failed),
don't attempt to update it.

Closes-bug: #1379113
Change-Id: I1de99702a385ac8ddeffc568270d2d3b51674323