switch: Don't check whether revision matches
switch: Don't check whether revision matches

It's quite possible that say "buildmaster" and "smoketested" are the
same revision - but we should allow switching between them.

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