Comment 2 for bug 1994081

Hi,

Most probably the exclude group doesn't make any failure for wallaby and master, because of the fact that master and wallaby doesn't use triple-ansible-inventory from tripleo-validations[1] anymore.

From wallaby onwards tripleo-upgrade uses inventory located under overcloud-deploy/<stack> [2][3]

[1]https://github.com/openstack/tripleo-validations/blob/stable/train/scripts/tripleo-ansible-inventory
[2]https://github.com/openstack/tripleo-upgrade/blob/master/tasks/common/load_roles_from_inventory.yaml#L2
[3]https://github.com/openstack/tripleo-upgrade/blob/master/defaults/main.yml#L61

I will investigate more and let you know what needs to be fixed for train.