test: add unit test to ensure all config types are instantiable (#1601)

llama_stack/providers/inline/safety/llama_guard/config.py

@@ -4,10 +4,16 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-from typing import List
+from typing import Any, Dict, List
 
 from pydantic import BaseModel
 
 
 class LlamaGuardConfig(BaseModel):
     excluded_categories: List[str] = []
+
+    @classmethod
+    def sample_run_config(cls, __distro_dir__: str, **kwargs: Any) -> Dict[str, Any]:
+        return {
+            "excluded_categories": [],
+        }