Comment 1 for bug 2061265

Guessing it was something missed in https://review.opendev.org/c/openstack/kolla/+/894948

Interestingly, going back to the 2023.1 image (and thus td-agent v4) appears to work, provided you link /usr/sbin/td-agent to /usr/sbin/fluentd - otherwise you have the exact opposite problem of td-agent then not being found. :)