Astros right-hander Wander Suero went unclaimed on outright waivers following his recent DFA and has been assigned to Houston’s Triple-A affiliate, per the Astros’ transaction log at MLB.com. He’ll have the right to reject that assignment in favor of free agency, both by virtue of his big league service time (more than three years) and by the fact that he’s previously been outrighted in his career. The 32-year-old Suero appeared in just one game and faced only one hitter with the Astros prior to his DFA. The veteran righty inked a minor league deal with Houston over the winter, was…