Comment 3 for bug 1948824

Reproduced by:

1. juju deploy ubuntu
2. when up, shutdown the machine in the cloud (used openstack)
3. juju remove-unit ubuntu/0
4. juju remove-machine 0

Didn't want to use force and perhaps move past the machine in dying.

juju:PRIMARY> db.machines.find({},{"life":1,"principals":1}).pretty()
{
 "_id" : "05d2fcdb-a93f-43cd-8ca8-cd1d610d6ed4:0",
 "principals" : [
  "ubuntu/0"
 ],
 "life" : 1
}