Merge pull request #17157 from mansam/get-backups-for-all-available-t…

…enants

Use handled_list to get Cinder backups for all accessible tenants
(cherry picked from commit f10ac92)

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1566563

app/models/manageiq/providers/storage_manager/cinder_manager/refresh_parser.rb

@@ -53,7 +53,8 @@ def get_snapshots
     end
 
     def get_backups
-      process_collection(@cinder_service&.list_backups_detailed.body["backups"],
+      process_collection(@cinder_service.handled_list(:list_backups_detailed,
+                                                      :__request_body_index => "backups"),
                          :cloud_volume_backups) { |backup| parse_backup(backup) }
     end