Updated openstack/openstack
Project: openstack/heat  1e18c4caa7ee06e2f96ea0f7fb97318bef1636a4

Move common functions into functional test base-class

The list_resources and update_stack are generic and likely to be used
in multiple tests, so move them into the test base-class.

Change-Id: I20b5399212a3dde514e0785b1fc91be2c30cba04