Comment 5 for bug 1053754

I think the structure of filter_propertiesis is like this:
filter_properties: {
    scheduler_hints:{
    },
    ignore_hosts: [],
    force_hosts: [],
}

but user can only setting the scheduler_hints, rather than "ignore_hosts" and "force_hosts". So "ignore_hosts" and "force_hosts" not in scheduler_hints is correct.