1593 populate existing asset storage image (#1618)

* black and flake 8 updates

* add ordering on qs

* black changes

* back changes

* fix bad conflict resolution change

* cleanup comments - switch back to select related

concordia/tasks.py

@@ -353,21 +353,22 @@ def calculate_difficulty_values(asset_qs=None):
     return updated_count
 
 
-# modify above def for storage_image populate
 @celery_app.task
 def populate_storage_image_values(asset_qs=None):
     """
     For Assets that existed prior to implementing the storage_image ImageField, build
-     the relative S3 storage key for the asset and update the storage_image value
+    the relative S3 storage key for the asset and update the storage_image value
     """
 
     # only fetch assest with no storgae image value
     asset_qs = (
         Asset.objects.filter(storage_image__isnull=True)
         .order_by("id")
-        .prefetch_related("item__project__campaign")[:20000]
+        .select_related("item__project__campaign")[:20000]
     )
 
+    logger.debug("Start storage image chunking")
+
     updated_count = 0
 
     # We'll process assets in chunks using an iterator to avoid saving objects