Comment 7 for bug 1319451

I suggest to create exchanges using curl then we deploy (Nailgun or Astute depends of which is first) as we do for MCollective.
Example: https://github.com/stackforge/fuel-library/blob/master/deployment/puppet/mcollective/manifests/rabbitmq.pp#L104

We need to declarate it as early as possible

It can give us place where this exchanges declared with wrong params.