Updated openstack/openstack
Project: openstack/nova  c47fa76b78ec0c5aa22164f4ec5a27dee32a27de

Added hacking check for jsonutils

jsonutils provides some additional features in comparison to pure json
or simplejson modules. For example, on Python 2.6, it automatically
switches to simplejson that provides significant performance boost.

So let's enforce usage of the module in replacement to stdlib json.

Change-Id: I86ed6cd3316dd4da5e1b10b36a3ddba3739316d3