Eric K wrote:

Requesting a feature freeze exception to complete the pre-upgrade check [1] for Congress. It's a simple, low-risk change that is very much independent from the rest of Congress.

[1] https://review.openstack.org/#/c/643216/

Since this would land in the congress service (and not in a library that others might have started depending on), I think as long as the congress team is comfortable with it (landing close to final release so getting more limited testing), this is fine. Thanks, -- Thierry Carrez (ttx)