PASADENA, Calif. — The plan for Michigan had been laid out long before the season by team leader Blake Corum. It was all about, they said, national championship or bust. Now, they’re closer than ever to fulfilling that dream. The No. 1-ranked Wolverines in their third-straight College Football Playoff national semifinal appearance, has finally advanced to the national title game after an overtime spectacle against No. 4 Alabama before 96,371 at the Rose Bowl on New Year’s Day. Michigan defeated Alabama, 27-20, after Corum scored a 17-yard touchdown and Josaiah Stewart stuffed Alabama quarterba…