By Brian Straus Those who remain in contention for a trip to Qatar but whose clubs are out of the playoff picture are gathering to maintain fitness for the World Cup. A small selection of World Cup hopefuls will begin gathering in Frisco, Texas, on Tuesday as the U.S. formally sets out on the road to Qatar with a “fitness camp” for out-of-season MLS players. Nine men are on coach Gregg Berhalter’s initial list with more to come, potentially, based on the result of this weekend’s two conference finals. The camp will run until Nov. 5, the date of the MLS Cup final. The 26-man World Cup roster th…