testing/soju: ensure /var/lib/soju is created
Without this, soju fails to start with:
daemon.info supervise-daemon[5733]: Supervisor command line: supervise-daemon soju --start --chdir /var/lib/soju --stderr /var/log/soju.log --user soju:soju /usr/bin/soju -- -config /etc/soju/config
daemon.err /etc/init.d/soju[5736]: supervise-daemon: chdir `/var/lib/soju': No such file or directory
cc @mpolanski: I'm not sure this is the correct approach, maybe a post-install script to set the owner would be better?
Edited by Simon Ser