[Nsi-wg] Service Description draft

People, I have completed a first attempt at a service description schema. It requires refactoring, but is good enough to stimulate discussion. I have attached three documents: 1. The service description schema schema ogf_nsi_services_description_v2_0.xsd 2. An example service description ServiceDescription.xml 3. Updated copy of service decoupling document with diagrams of elements and appendix with schema and example xml. I am sorry I did not get time to write the associated text for the diagrams, but you can look in the schema for the documentation. John