By TIM DAHLBERG, AP Sports Writer LAS VEGAS (AP) — Don Logan spent years trying to get a new minor league ballpark in this gambling city, so the president of the Las Vegas Aviators understands what the Oakland Athletics are going through in their quest for new digs in the Bay Area. After all, he's had sewage in his dugout, too. The A's are still contending with antiquated plumbing at the Oakland Coliseum,