Use the Group model from the updated hsh app version in hsh_compat

ssoauth/extras/hsh_compat.py

@@ -28,6 +28,6 @@ def get_group_names_for_user(user):
     except (Account.DoesNotExist, Account.MultipleObjectsReturned,) as e:
         logger.error("hsh.Account not found for {user}. {e.__class__.__name__}: {e}".format(user=user, e=e))
         return set()
-    hsh_groups = hsh_account.auth_groups.filter(GROUP_NAME_LOOKUP)
+    hsh_groups = hsh_account.groups.filter(GROUP_NAME_LOOKUP)
     return {g.name for g in hsh_groups}