Comment 1 for bug 1935948

I see the issue:

`changed_when: true` got over indented under the shell module

https://review.opendev.org/c/openstack/tripleo-quickstart-extras/+/800215/2/roles/overcloud-prep-images/tasks/overcloud-prep-images.yml#112

~~~
      shell: >
        set -o pipefail &&
        {{ working_dir }}/overcloud-introspect.sh 2>&1 {{ timestamper_cmd }} >
        {{ overcloud_introspect_script_log }}
        changed_when: true
~~~

We never wanted to change anything for < ussuri.