[neutron] Gate broken, please don't recheck

Hi,

With the latest release of neutronclient version 10.0.0 the neutron gate pep8 job is now failing. Please hold your rechecks until a fix [0] merges.

There's also some old unused devstack code that uses this neutron-debug code, will remove that in a follow-up.

Thanks,

-Brian

[0] https://review.opendev.org/c/openstack/neutron/+/883081