Comment 1 for bug 1845268

Looks like this was changed recently with https://bugs.launchpad.net/tripleo/+bug/1842141.

After https://review.opendev.org/#/c/680722/ and https://review.opendev.org/#/c/680724/, pre_deployments_{{ role }} is the var rather than {{ role }}_pre_deployments.

I think tripleo-common in your undercloud mistral containers are old.