Some of Canada’s top professional wrestling stars are coming back to Penticton. Thrash Wrestling — known as the top promotion across the Thompson-Okanagan and Kootenays — brings its next show, “Knee Jerk Reaction,” to the Luso Multicultural Centre on Friday night, Aug. 21. Former MMA champion and Edmonton’s own Chase Degenhardt will be among those slated to fight in a championship tilt. Degenhardt, who won MMA’s ZP Vacant Middleweight Championsh…