Comment 4 for bug 1420103

FYI: I have it with guys from nova. As feedback:
- it does not get huge benefit for us in performance
- we can get some errors/mistakes due to it's manual work (there is no any automatic script)
- it makes migrate history less clear (honestly, it's not big deal)
So I agree with Low status, and it can be done by anybody, who wants contribute to Heat.
Some advises can be gotten from dprince (he did the same thing in nova).
btw glance and cinder do not worry about this work.