fix: Add policies to adapters (#4277)

The configured policy wasn't being passed in and instead the default was
being used (e.g. in the s3 file provider)

Closes: #4276

Signed-off-by: Derek Higgins <derekh@redhat.com>
(cherry picked from commit 2fce5abe34)

llama_stack/core/resolver.py

@@ -391,6 +391,9 @@ async def instantiate_provider(
         method = "get_adapter_impl"
         args = [config, deps]
 
+        if "policy" in inspect.signature(getattr(module, method)).parameters:
+            args.append(policy)
+
     elif isinstance(provider_spec, AutoRoutedProviderSpec):
         method = "get_auto_router_impl"