Comment 6 for bug 1841932

note a workaround for this is to create 2 new host aggreates one with
hide_hypervisor_id=true and the other with hide_hypervisor_id=false then add all host to both aggreates.

this will prevent schduling based on hide_hypervisor_id extra spec as all host will support all allowed values for hide_hypervisor_id but it will enable you to schdule vms in this case.

the longterm fix is to namespace hide_hypervisor_id and or remove support for unnamespaced extra specs form the AggregateInstanceExtraSpecsFilter