Comment 9 for bug 1865223

I missed the ML comment:

"Yes, this is a known issue in OSclient: most of the "objects" (networks, subnets, routers, etc) to
be retrieved, can usually can be retrieved by ID and by name. OSclient tries first to use the ID
because is unique and a DB key. Then, instead of asking the server for a unique register (filtered
by the name), the client retrieves the whole list and filters the results.

But this problem was resolved in Train: https://review.opendev.org/#/c/637238/. Can you check, in
openstacksdk, that you have this patch? At least in T."

FWIW, I successfully patched client 3.18.1 (Stein) which sped up the DELETE operation. Thanks again.