fedora-soas-common.ks: Include livecd-tools
    
    Version 25 of livecd-tools has new tools to help in rebuilding LiveOS images. For example,

    * editliveos permits overlay merging and image refreshing,

    * editliveos allows overlay and home file system resizing and format changes

    * livecd-iso-to-disk allows multi image installation on a single USB disk device

    * livecd-iso-to-disk allows sourcing and writing to the same disk device.

    

    Having the livecd-iso-to-disk installer onboard the .iso makes installation of a persistent overlay easier. (Persistent overlays are the standard for SoaS image in a pocket deployment.)

    

    The new tools also work with OverlayFS overlays.