Sorry for the late reply, I have now been able to find the culprit by selectively removing all the python-*client packages that I had installed, the error comes from
python-mistralclient-1:2.0.0-3
Checking upstream code, the error also happens with the current openstackclient and that mistralclient version, it is fixed in python-mistralclient==2.1.0.
So I think the proper solution would be to install the newer client package from yakkety into the cloud archive, too.
Sorry for the late reply, I have now been able to find the culprit by selectively removing all the python-*client packages that I had installed, the error comes from
python- mistralclient- 1:2.0.0- 3
Checking upstream code, the error also happens with the current openstackclient and that mistralclient version, it is fixed in python- mistralclient= =2.1.0.
So I think the proper solution would be to install the newer client package from yakkety into the cloud archive, too.