Netflix is doubling down on one of television’s biggest franchises, signing a massive new licensing agreement worth a reported $500 million to bring The Walking Dead Universe to audiences around the world.AMC Global Media announced Thursday that it has reached a multi-year global licensing agreement with Netflix that will give the streaming giant co-exclusive rights to the original “The Walking Dead” series and all six of its spin-offs. In total, the deal covers 371 episodes spanning the entire franchise. ...