FIX! (Glance): download policy manual reversion. (#960) (#961)

Removing two policy lines that broke BFV.

(cherry picked from commit 274f7d7)

Author: dwith

base-helm-configs/glance/glance-helm-overrides.yaml

@@ -121,8 +121,6 @@ conf:
     "default": "role:admin or role:glance_admin"
     "context_is_admin": "role:admin or role:glance_admin"
     "publicize_image": "role:glance_admin"
-    "is_owner": "tenant:%(owner)s"
-    "download_image": "rule:is_owner or rule:context_is_admin"
   logging:
     logger_root:
       level: INFO