A play in the commedia dell’arte tradition of Italy from the 1700s, featuring stock characters in uncomfortable situations, is now on Broadway. But the production is not full of powdered wigs and arcane syntax. The original play, Carlo Goldini’s Il servitore di due padroni (The Servant of Two Masters), has been adapted by Richard Bean and turned into One Man, Two Guvnors, set in the British resort town of Brighton in the 1960s.