Unless they radically changed the options from B0.61 (the last time I managed to get far enough) - that's still in there in Adventure mode. It's "Fatigues".
Hmm interesting, so it's actually still in the game. I wonder if I'll run into it in story mode.
edit: just checked in Build mode; the outfits are definitely still in the game. Question is, is it available in story mode, or can it be easily added in?