Comment 9 for bug 1815618

Reviewed: https://review.openstack.org/648648
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=5a11b24f370a122f56a2bbf622824caaff73aa78
Submitter: Zuul
Branch: stable/queens

commit 5a11b24f370a122f56a2bbf622824caaff73aa78
Author: Lajos Katona <email address hidden>
Date: Fri Mar 1 14:39:13 2019 +0100

    Fix QoS rule update

    QoS rule (QosBandwidthLimitRule and QosMinimumBandwidthRule) update now
    expects to have direction field in the API request for checking for
    duplicates.
    This patch changes this by using the rule fetched from the policy and
    the update will work on that rule object instead of a newly created
    object which for minimum_bandwidth rule has no default direction, which
    causes the update to fail.

    Change-Id: Ib8f95bf14193a50f22102668bed9208a93d1caba
    Closes-Bug: #1815618
    (cherry picked from commit c1999a2b2268a4f5477247974363e31cb54e0e6b)