Comment 10 for bug 1829736

i note the similarity in the error message from https://bugs.launchpad.net/tripleo/+bug/1824301 "Failed to import docker or docker-py - No module named docker. Try `pip install docker` or `pip install docker-py` (Python 2.6)"}"

in that case though it was a matter of checking /usr/bin/rpm -q python2-docker and skipping when it wasn't there https://review.opendev.org/#/c/651789/6/roles/tripleo-docker-rm/tasks/main.yaml