Comment 6 for bug 1584623

Reviewed: https://review.openstack.org/325784
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=b1617c8345ba62d2b758ae3291471155aa6d01f2
Submitter: Jenkins
Branch: master

commit b1617c8345ba62d2b758ae3291471155aa6d01f2
Author: huangtianhua <email address hidden>
Date: Fri Aug 5 10:26:43 2016 -0400

    Set properties to before_props before calling handle_update

    For some resources, we need to get the old properties
    while handle_update, e.g. for nova server resource, we
    calculate networks from old_nets and new_nets when update
    the server networks, but the properties of server is updated
    after rsrc_defn reparsing. So let's set the properties to
    before_props before calling handle_update.

    Change-Id: I24fea225a2749ee9baaa6273b78eed8126eb9e95
    Closes-Bug: #1584623