Updated openstack/openstack
Project: openstack/heat  d8eb343c0542f0fb0c4dd4b41c0e5f18cd9ff5be

Remove duplication on stack resource operations

Move resource existence and availability check to a single place to
avoid duplication.  This is prep work for the blueprint
detailed-resource-show.

Change-Id: Ie923516d11307fc5efdbfbe728fb842137915b28