Minimal container to have nova-agent running in a container
systemd-nspawn -D /srv/nova-agent/ /bin/sh -c \
"HOME=/root mount -t xenfs none /proc/xen; \
/usr/share/nova-agent/0.0.1.37/sbin/nova-agent \
-o - -n -l info /usr/share/nova-agent/nova-agent.py"