Feature container install x2

Enables support for deploying a cloud within a container.
We could use lxc-wait here to potentially make this a little faster.
I see that next we're waiting for cloud-init to be done, which is probably after 'lxc-wait -s RUNNING' would return, so maybe it wouldn't be much of an improvement?

Also, why not e.g. make max_tries 50 and check every second? Just to shave the wait time some more