Comment 9 for bug 1621180

## Recreate failure
$ cat >user-data <<EOF
#cloud-config
salt_minion:
  public_key: "foo public"
  private_key: "foo private"
EOF

$ lxc delete --force $n
$ lxc launch ubuntu-daily:xenial $n "--config=user.user-data=$(cat user-data)"
sleep 30
$ lxc exec $n -- grep salt/pki/ /var/log/cloud-init.log </dev/null
$ lxc exec $n -- grep salt/pki/ /var/log/cloud-init.log </dev/null
Sep 17 02:30:03 ubuntu [CLOUDINIT] util.py[DEBUG]: Writing to /etc/salt/pki/minion.pub - wb: [420] 10 bytes
Sep 17 02:30:03 ubuntu [CLOUDINIT] util.py[DEBUG]: Writing to /etc/salt/pki/minion.pem - wb: [420] 11 bytes

## Note, that ubuntu's packaging actuall moves these files to their proper
## location, so checking the log is all we can do to show failure.

## Now update container, clean and reboot to show first boot
$ lxc exec $n -- sh -c '
    p=/etc/apt/sources.list.d/proposed.list
    echo deb http://archive.ubuntu.com/ubuntu xenial-proposed main > "$p" &&
    apt-get update -q && apt-get -qy install cloud-init' </dev/null
$ lxc exec $n -- sh -c 'apt-get -qy --purge remove salt-minion && rm -Rf /etc/salt' </dev/null
$ lxc exec $n -- sh -c '
    cd /var/lib/cloud && for d in *; do [ "$d" = "seed" ] || rm -Rf "$d"; done
    rm -Rf /var/log/cloud-init*'

$ lxc exec $n reboot

$ lxc exec $n -- grep salt/pki/ /var/log/cloud-init.log
Sep 17 02:31:17 x1 [CLOUDINIT] util.py[DEBUG]: Writing to /etc/salt/pki/minion/minion.pub - wb: [420] 10 bytes
Sep 17 02:31:17 x1 [CLOUDINIT] util.py[DEBUG]: Writing to /etc/salt/pki/minion/minion.pem - wb: [420] 11 bytes

$ lxc exec $n -- dpkg-query --show cloud-init
cloud-init 0.7.8-1-g3705bb5-0ubuntu1~16.04.1