Comment 14 for bug 1722842

Reviewed: https://review.openstack.org/511280
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=605364ad78407e3176dd79d0e4fe84cf87c8ce8e
Submitter: Zuul
Branch: master

commit 605364ad78407e3176dd79d0e4fe84cf87c8ce8e
Author: Thomas Morin <email address hidden>
Date: Wed Oct 11 17:57:49 2017 +0200

    Support that an extension extends a sub-resource

    The neutron.api.extensions code assumes that the resource to update are
    base resources and updates its dictionary. When the resource
    is a sub-resource, ie. a {'parent': ... , 'parameters': {..} } dictionary,
    the result of the update is that the content of 'parameters' is
    overwritten.

    The correct thing to do here, in the case where the extended resource is
    a sub-resource, is to update the content of parameters with the new/changed
    attributes.

    This change also removes a workaround that was made in
    the qos-bw-limit-direction extension, and which after the change in API
    extension code, is not needed anymore.

    Needed-By: I263e1ee6cf4e1a91be91a4a78f4a160f64d33cc6
    Change-Id: I4cb61481205c3689c41e62670cec113adb2a0362
    Closes-Bug: 1722842