POST /v1.0/1234/mgmt/instances/f3a9e303-1542-4663-9dca-bfdcd7abe095/action HTTP/1.1
User-Agent: python-example-client
Host: ord.databases.api.rackspacecloud.com
X-Auth-Token: 570ef429-78eb-43ec-ad69-de9456cd88c9
Accept: application/xml
Content-Type: application/xml

<?xml version="1.0" ?>
<update xmlns="http://docs.openstack.org/database/api/v1.0"/>