PATCH /v1.0/1234/instances/4c93c73b-d6d0-47d7-b8c6-b699d19d7de9 HTTP/1.1
User-Agent: python-example-client
Host: openstack.example.com
X-Auth-Token: 87c6033c-9ff6-405f-943e-2deb73f278b7
Accept: application/json
Content-Type: application/json