By ANDREW DAMPF Lance Armstrong commanded the spotlight again, and it had nothing to do with his seven Tour de France titles or fight against cancer.Armstrong had a new role Friday: labor activist.On a day when Norway's Edvald Boasson Hagen won a cold and rainy seventh stage of the Giro d'Italia and Italy's Danilo Di Luca kept the overall lead, Armstrong and all but one of his Astana teammates made a protest.The riders, upset over not being paid salary by their Kazakhstan team, wore special jerseys that faded the sponsor names.