Former South Africa junior international Luke Fleurs, who played for the country’s most popular soccer club, Kaizer Chiefs, was killed in a carjacking in Johannesburg, police officials confirmed Thursday. Fleurs, 24, was shot in the chest at a gas station Wednesday night and the assailants drove off in his vehicle. “While waiting to be served by the attendant, he was confronted by two armed males,” police spokesperson Lieutenant Colonel Mavela…