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As I try to debug Federaion problems, I am often finding I have to check 
three nodes to see where the actual requrest was processed. However, If 
I close down to of the controller nodes in Nova, the whole thing just fails.


So, while that in it self is a problem, what I would like to be able to 
do in development is have HA running, but with only a single controller 
node answering requests.  How do I do that?