admin: Initialize /var more fully
admin: Initialize /var more fully

This helps out gnome-ostree, because gdm needs /var/lib for example.

sujitfulse/ostree,GNOME/ostree,gatispaeglis/ostree,GNOME/ostree,GNOME/ostree,resin-io/ostree,gatispaeglis/ostree,gatispaeglis/ostree,resin-io/ostree,sujitfulse/ostree,gatispaeglis/ostree,resin-io/ostree,sujitfulse/ostree,GNOME/ostree,leandrosansilva/ostree,sujitfulse/ostree,GNOME/ostree,leandrosansilva/ostree,gatispaeglis/ostree,gatispaeglis/ostree,sujitfulse/ostree,leandrosansilva/ostree,resin-io/ostree,resin-io/ostree,leandrosansilva/ostree,leandrosansilva/ostree