By PAUL NEWBERRY April 30, 2012 12:00 AM ATLANTA — Josh Smith scored 22 points and grabbed 18 rebounds, leading the Atlanta Hawks to an 83-74 victory over Boston in Game 1 of the Eastern Conference playoffs Sunday night, the final minute turning ugly when Celtics star Rajon Rondo was ejected for bumping an official. The Hawks, who led by as many as 19 in the first half,...