Implementation and tests for the core utils packages for the scheduler refactor

Author: markurtz

tests/unit/utils/test_registry.py

@@ -531,3 +531,4 @@ def walk_packages(package_path, package_name):
             assert len(objects) == 1
             assert TestAutoRegistry.registry_populated is True
             assert TestAutoRegistry.registry is not None
+            assert "module1class" in TestAutoRegistry.registry