Step Up: High Water, YouTube Red’s new original drama series based on the film franchise that grossed $650 million at the global box office, has set its cast as production begins in Atlanta. Ne-Yo (The Wiz, World of Dance) joins series regulars Naya Rivera (Glee) and Faizon Love (Couples Retreat, Elf) to headline the series from YouTube and Lionsgate TV, set for debut on YouTube Red this fall. Channing Tatum and Jenna Dewan Tatum, who co-starred in the original Step Up…