In Spike Lee’s upcoming thriller "Highest 2 Lowest," Denzel Washington and A$AP Rocky spend as much time above the skyline as they do on the streets of Brooklyn — thanks to a cinematic cameo from one of the borough’s priciest listings. The penthouse that appears in the trailer isn’t a movie set; it’s the top residence at Olympia Dumbo, a sail-shaped tower overlooking the East River, now seeking $15 million, The Post has learned.