Kourtney Kardashian ruffled feathers when she made an Instagram tribute to husband Travis Barker on Father’s Day, as she failed to include his kids or her ex Scott Disick — whom she shares three children with — in the post. “Happy Father’s Day @travisbarker !! Beyond grateful for the Dad that you are to our baby boy, and all of our kids,” the mom-of-four, 45, gushed in the caption. “You keep us safe and protected and take care of us. Having a family with you is heaven. Happy to celebrate you!” All of the photos in the upload featured the Blink 182 drummer, 48, with their 7-month-old son, Rocky…