Wait for right state before selecting new machine
Wait for right state before selecting new machine

We were trying to select the machine soon after creation without waiting
for UI state to change to 'collection' and App.select_item() was simply
failing since UI state was still 'wizard'.

https://bugzilla.gnome.org/show_bug.cgi?id=672567

vbenes/gnome-boxes,vbenes/gnome-boxes