Remove unnecessary to upper named resource translation (#349)

Summary:
Pull Request resolved: #349

Remove unnecessary `to upper` named resource translation

Reviewed By: kiukchung

Differential Revision: D32471240

fbshipit-source-id: f299c377c296f2c36ccbe4a6aa831720f5e7ea99

Author: aivanou

torchx/components/base/__init__.py

@@ -23,7 +23,7 @@ def _resolve_resource(resource: Union[str, Resource]) -> Resource:
     if isinstance(resource, Resource):
         return resource
     else:
-        return named_resources[resource.upper()]
+        return named_resources[resource]
 
 
 def torch_dist_role(