Smarter upgrades of node type definitions

- No changes are applied unless the new --go CLI arg is used.
- Differences to node types are actually shown.
- Dynamic form definitions are kept.

tests/test_api/test_cli.py

@@ -293,7 +293,7 @@ class ReplaceNodeTypesTest(AbstractNodeReplacementTest):
 
         # Run the CLI command
         with self.app.test_request_context():
-            replace_pillar_node_type_schemas(proj_url=self.proj['url'])
+            replace_pillar_node_type_schemas(project_url=self.proj['url'])
 
         # Fetch the project again from MongoDB
         dbproj = self.fetch_project_from_db()