Type must be "Policy" error when trying to import a Section to a Policy #62388668

Per [story 62388668](https://www.pivotaltracker.com/story/show/62388668).  Template-derived uploads of sections to directives were being rejected for lacking the directive *kind* (e.g. "Data Asset Policy") rather than the directive *type* (e.g. "Policy").  Template and importer are updated to only expect the type, not the full kind.