
Extend the API with the ability to build config drives from meta_data, network_data and user_data, where meta_data and network_data are JSON objects, and user_data is either a JSON object, a JSON array or raw contents as a string. This change uses openstacksdk (which is already an indirect dependency) for building config drives. Change-Id: Ie1f399a4cb6d4fe5afec79341d3bccc0f81204b2 Story: #2005083 Task: #29663