The containerized monitor-add-nodes does not have the correct
permissions to write to the current working directory. Set the
working directory to /tmp in the container command.
Derived from a similar script by Andrea Fasano
to generate the add-nodes ISO.
https://github.com/openshift/installer/pull/8242
This script tweaks it and creates a node-joiner-monitor
pod to monitor adding nodes to a cluster.
Co-authored-by: Andrea Fasano <andfasano@redhat.com>