After agreeing to one-year contracts with Bud Norris, Jed Lowrie and Wesley Wright today, the Astros can now focus on getting ready for spring training. Norris signed for $3 million, and Lowrie agreed to a $2.4 million deal. Figures for Wright were unavailable. “It’s nice to have that behind us,” Astros general manager Jeff Luhnow said. “Now we can focus on spring training and putting the best 25 men on the field on opening day. We really value all three players.” Luhnow said Friday morning he was hopeful Houston could agree to a contract extension with at least one of its three arbitration-eligible players before numbers were filed. Luhnow’s hope [.]