Updated openstack/openstack
Project: openstack/python-neutronclient  4bc37901af8b8863ffaccf977e03238d73245919

Leverage openstack.common.jsonutils

This patch removes our own home brewed json helper functions and leverages
the ones from openstack.common.jsonutils instead.

Change-Id: Idc5ee0fec56b0a0f337433a830647d4f421a8283
Closes-bug: 1365263