LOS ANGELES (Reuters) – The setting is still the Roaring Twenties but the soundtrack for Australian film director Baz Luhrmann's take on classic novel "The Great Gatsby" is firmly 21st-century rap, pop and rock. Universal Music on Thursday released the track list for the upcoming movie featuring Beyonce, Lana Del Rey, and Florence + the Machine, as well as a new song, "100$ Bill," by rapper Jay-Z, who is executive producer of the soundtrack. …