Comment 2 for bug 1982991

This was not actually a regression. We expected the change in yoga allows users to purge the config by default but that was not true.

While implementing this, I noticed that ovn-controller sets "0" automatically if the parameter is not set, and that is causing broken idempotency.

I'll give it another thought to find out any good way to handle this but I might just close this as WON'T FIX if I don't come up with any good solutions.