Professional wrestler CM Punk must face a lawsuit accusing him of violating an agreement to pay a colleague’s legal bills when the two were sued for defamation, a Cook County judge ruled.Dr. Christopher M. Amann, World Wrestling Entertainment’s senior ringside physician, sued CM Punk — legal name Philip J. Brooks — and Colt Cabana — legal name Scott Colton — for defamation. Cook County jurors last June found in favor of the two men.In a 2014 episode of Colton’s podcast “The …