Don’t expect to find just any soft drink in Cliff Ritchie’s fridge. The president and CEO of Cheerwine says it’s a Cheerwine only zone — a family tradition. “There were never any competitor products in our house growing up. If anybody thought about that they were reprimanded. I’m still that way in my house,” he says. SPECIAL REPORT: Read the stories of all the 2017 Family Business Awards honorees The Cheerwine brand is celebrating its 100th birthday this year. It is owned by the…