Host_filter for BaseScheduler

Hi,

I was working to push code for review on a new filter driver based on previous ZoneAwaredScheduler with host_filter driver model, and found out the latest code, revision 1576, has no ZoneAwareScheduler. I am stuck!

LeastCostScheduler(BaseScheduler) is now the one that can invoke JsonFiler. But I can't locate corresponding document for configurations, can someone provide a basic nova.conf for me to jump start?

For example, I was using following configuration for ZoneAwaredSchedule for new filter driver, what are the corresponding ones for LeastCostScheduler for me to invoke ~/filter/JsonFiler()?

Thanks,
-Fred

--scheduler_manager=nova.scheduler.manager.SchedulerManager
--allow_admin_api=true
--enable_zone_routing=true
--zone_name=zone1
--build_plan_encryption_key=c286696d887c9aa0611bbb3e2025a45b
--scheduler_driver=nova.scheduler.host_filter.HostFilterScheduler
--default_host_filter=nova.scheduler.host_filter.JsonFilter