Aug. 21—PITTSBURGH — By reaching over the wall Sunday at Busch Stadium to steal a home run, Cardinals center fielder Richie Palacios added to his family’s rising total in the major leagues, prompting his father to say his son is “not the only Palacios robbing homers” and his mother to suggest a sibling courtesy. “Do not try to rob your brother of a home run,” Lianne Palacios said. “Not at this…