Comment 3 for bug 1859183

So after some more digging, there's static ANSIBLE_LOG_PATH set to that ~/ansible.log.

It might be wise to make it more dynamic, for instance using the "undercloud_log_file" internal var when we actually deploy the undercloud.
Beware, I'm not sure how ansible-runner|ansible-playbook manage the log file, i.e. not sure if it's overridden or just appending content.