Yankees’ plan for holding the fort while Aroldis Chapman’s out

MIAMI — Aaron Boone is confident there are enough quality arms in the Yankees’ bullpen to cover for losing Aroldis Chapman to the disabled list. With Dellin Betances, Zach Britton, David Robertson, Chad Green and Jonathan Holder, Boone is correct. Betances is among the best relievers in baseball and Britton, who has pitched better of…