Comment 6 for bug 1087298

allow_tenant_isolation is usually set to false as default in our environment, since when allow_tenant_isolation = true, the teardown function not working issue is much more serious than when it's disabled. There is no way to batch execute cases in numbers, since the garbage instances/image snapshot and security groups are all easy exceed quota and leads to large number of following error cases.

Another question is here...how can I know for which case I should enable allow_tenant_isolation? I found behaviors of some scripts are not consistent when the setting changes.