The Occupy Wall Street volunteer kitchen staff launched a “counter” revolution yesterday -- because they’re angry about working 18-hour days to provide food for “professional homeless” people and ex-cons masquerading as protesters. For three days beginning tomorrow, the cooks will serve only brown rice and other spartan grub instead of the usual menu of organic chicken and vegetables, spaghetti bolognese, and roasted beet and sheep’s-milk-cheese salad. They will also provide directions to local soup kitchens for the vagrants, criminals and other freeloaders who have been descending on Zuccotti Park in increasing numbers every day.