Updated openstack/openstack
Project: openstack/ceilometer  2980c382e19e312fa388ede5ecdc2f9a652e4772

remove ordereddict requirement

we don't support py26 in Kilo anymore. since OrderedDict is
supported in py27+, we can remove this dependency.

Change-Id: Iafe1cf4ab6de36f6be8ca84580b76cf2dc5b90a7