BOSTON (AP)) — The Ottawa Senators showed the Boston Bruins what the NHL’s top teams do — take leads and hold them. Jason Spezza scored a pair of goals to lead the Senators to their sixth straight win, 3-2 over the Bruins on Tuesday in a matchup of the Eastern Conference’s top two teams. Luke Richardson’s goal broke a 1-1 tie midway into the second and Spezza scored his second goal on a power…