Stop writing to deprecated columns for image data.

util/migrate/backfill_v1_metadata.py

@@ -11,6 +11,11 @@ from data import model
 logger = logging.getLogger(__name__)
 
 
+def image_json_path(storage_uuid):
+  base_path = storage.image_path(storage_uuid)
+  return '{0}json'.format(base_path)
+
+
 def backfill_v1_metadata():
   """ Copies metadata from image storages to their images. """
   logger.debug('Image v1 metadata backfill: Began execution')
@@ -48,7 +53,7 @@ def backfill_v1_metadata():
 
           repo_image = repo_image_list[0]
           uuid = repo_image.storage.uuid
-          json_path = storage.image_json_path(uuid)
+          json_path = image_json_path(uuid)
 
           logger.debug('Updating image: %s from: %s', repo_image.id, json_path)
           try: