Updated openstack/openstack
Project: openstack/oslo.messaging  64f91d30a8ad870e433c0dab2fe51db24769aeec
null
sysnchronize oslo-incubator modules

Update to get jsonutils compatible with Python 3.

The babel Python module is now required by gettextutils, and gettextutils is
imported by excutils.

Change-Id: Ifa6d6b29e2af58dfcfda1ab7efdb2f32cf9de655