Updated openstack/openstack
Project: openstack/python-heatclient  59a2e3d5855b392b3b9cc4fd5dd281c9dd184660

Move to oslo.serialization

Remove references to the now-removed oslo-incubator jsonutils,
which has been deprecated and replaced with oslo.serialization

Change-Id: I2483f5e1036471a9aae4e3185bf4b2f24afa99ea
PartialBug: 1380629