On the 2023.1 (Antelope) PTG we discussed the status of the python binding (SDK) code in python-neutronclient and decided to not allow new features to this repo (see [1]), and make users to use openstacksdk. Let's add a warning log message and a releasenote to make it visible. [1]: https://etherpad.opendev.org/p/neutron-antelope-ptg#L163 Change-Id: I03317179bd0d30a69b91eef6e451b8e40eb28191