Pittsburgh CLO is bringing the Lerner & Loewe musical “Camelot” back for the seventh time, to lead off its 79th summer season, and the legend of King Arthur and the Round Table couldn’t come at a better time. The casting brings Broadway to Pittsburgh, through stars Adam Kantor as Arthur (“The Band’s Visit,” “Fiddler on the Roof,” “RENT”), Ben Jacoby as Lancelot (“Beautiful, The Carole King Musical”) and Kyla Stone as Guenevere (“Harmony”; and “Into the Woods” with PCLO).