HOUSTON — Aaron Boone was just about to head down to the visiting dugout at Daikin Park on Saturday night when he started hearing “whispers” about Alex Cora getting fired . The Yankees manager was not initially sure if the news about his Red Sox counterpart was true, but eventually got some confirmation, which did not lessen the stunning nature of it. “Very shocked,” Boone said after an 8-3 win over the Astros . “Certainly surprising and probably caught us off guard. I’ll probably dive into it a little more tonight.” Boone, who has been good friends with Cora dating to their time together at ESPN, just saw him earlier this week as the Yankees swept the Red Sox at Fenway Park. But two days later, after the Red Sox’s 17-1 win over the Orioles on Saturday afternoon made them 10-17 on the season, Boston’s front office orchestrated a bloodbath, firing Cora and five members of his staff, including former Yankees hitting coach Dillon Lawson. “I have a feeling [Cora] will do whatever he wants,” Boone said.…