The Astros’ starting rotation has undergone its second significant change since the season started a little more than a month ago. Veteran lefthander Erik Bedard has been moved to the bullpen and will throw in a long-relief format indefinitely, Astros manager Bo Porter said Sunday prior to a 3:10 p.m. game against the Detroit Tigers at Minute Maid Park. Bedard will be available for the contest. “I believe that he can really help us in a multitude of roles out there. … He’s a guy that you can bring in if you find a pocket with some leftys,” Porter said. The Astros have yet to announce a starter Friday against [...]