OAKLAND, Calif. — You figured the crowd would fill the O.co Coliseum with a frothy zest at some point this afternoon. After all, Justin Verlander was on the mound and he was the pitcher who ended Oakland’s season last fall. Besides, many of the fans arrived hours early to pop open their trunks and let the beer flow. Things are a little different in the East Bay, where baseball games are played in a concrete bowl and April contests are as much a reason to party as any other. So when Brandon Moss struck out in the bottom of the seventh inning on call he didn’t appreciate, the crowd got a little testy.