Updated openstack/openstack
Project: openstack/heat  5e97d49f07a35b155bee7389ba59465846641690

Update: Make addition/removal of resources more explicit

Use add_resource() and remove_resource() functions instead of indexing to
add and remove resources, to make it less surprising that the resources
themselves are being modified in the process.

Change-Id: I392cca8f68165988842affd1e23bce958645921b