I'm glad to hear this was resolved! Could you please do us a favor? There may be others out there that would like to try running OMPI on OpenStack. It would be really helpful if we could capture your steps for making it all work and put those in our FAQ area of our web site. Would you mind passing them along?
I'd be happy to credit you with it - just pass me your name, if you would like me to do so. Thanks! Ralph