Don Manoukian, owner of Knight International LLC, says a new brand of imported vodka that's garnering rave reviews from vodka aficionados has the potential to become the next big international brand and provide a huge growth in sales for the Reno-based spirits company.Knight is the sole U.S. importer of Premium Gera Vodka, which is manufactured by A.B. Alita, a well-known Lithuania company that also makes beer, wine soft drinks and fruit juices. Manoukian, who made a name for himself as a professional wrestler and by playing one year with the very first Oakland Raiders football team, says he landed the …