CC Sabathia undergoes more tests but not on his knee

In addition to getting a shot of lubrication for his right knee Tuesday, CC Sabathia recently underwent tests on his left shoulder. “Just looking at stuff, he is fine,’’ Aaron Boone said of Sabathia’s shoulder before Wednesday’s 7-5 win over the Diamondbacks at Yankee Stadium. Talking about the 39-year-old pitcher’s knee that landed him on…