Ok, I think I have a better understanding of the scope of the effort: the ultimate goal is that you'd like to be in a position of running X replicas of the Neutron servers (just the servers) at any given time where X1 run on version N and X2 run on version N-1 (X1+X2=X). All the agents are still at version N-1.
Most importantly You want this to work, and you want to test this in the gate. Correct?
Ok, I think I have a better understanding of the scope of the effort: the ultimate goal is that you'd like to be in a position of running X replicas of the Neutron servers (just the servers) at any given time where X1 run on version N and X2 run on version N-1 (X1+X2=X). All the agents are still at version N-1.
Most importantly You want this to work, and you want to test this in the gate. Correct?