
oslo project provide jsonutils, and apmecclient use it in many place[1], this PS to update the remained json moudule to oslo jsonutils for consistency. [1]: https://github.com/openstack/python-apmecclient/search?utf8=%E2%9C%93&q=jsonutils&type= Change-Id: Id6e3a1d64a54a9858041597c2cda414407f1edb1