Changes to interface between server and provisioner
entityTypeto indicate the type of provisioner task.
- Remove duplication of node information under
configsection. Instead, all entity related information is stored under the corresponding entity in
entities, entities are categorized by entity type.
ssh_host_keysnow moves under the corresponding enitity.
sshuserare now resolved by the server based on image, provider and user config, and will be stored under each entity.