Comment 2 for bug 1693427

Could you confirm which versions of Packstack and the Puppet modules are you using? From the Packstack code reference you provide, it looks like stable/mitaka code: https://github.com/openstack/packstack/blob/stable/mitaka/packstack/puppet/templates/nova_sched.pp

The Packstack stable/mitaka code does not include class nova::scheduler::filter, which is where the other definition is included (see https://github.com/openstack/puppet-nova/blob/stable/mitaka/manifests/scheduler/filter.pp#L91), so there should be no conflict.

For Ocata and later releases, this was already fixed by https://review.openstack.org/409278.