Re: [rhinstaller/anaconda/pulls/231 master] Wait forever for kickstarts on CDROM (#1168902)

[dashea]

Modified slightly according to vpodzime's comment.

See [dracut's `dracut-initqueue.sh`](https://github.com/haraldh/dracut/blob/RHEL-7/modules.d/98systemd/dracut-ini...) for details on how the dracut mainloop works.