Comment 3 for bug 1934256

Reviewed: https://review.opendev.org/c/openstack/neutron-lib/+/799034
Committed: https://opendev.org/openstack/neutron-lib/commit/44b3fc3f1821022aa5662b87a749b6b0eddaff20
Submitter: "Zuul (22348)"
Branch: master

commit 44b3fc3f1821022aa5662b87a749b6b0eddaff20
Author: Przemyslaw Szczerbik <email address hidden>
Date: Thu Jul 1 12:11:21 2021 +0200

    Add a TODO note for resource classes constants

    The os-resource-classes lib is the official source of the standard
    placement resource classes. Currently, the neutron-lib contains a copy
    of those constants. This code duplication shall be fixed with next
    major neutron-lib release. For the time being, add a TODO note
    informing that those constants shouldn't be used.

    Related-Bug: #1934256
    Change-Id: Iee08835fd30d43249a261aa0c0a0b6f2cda08ea4