Jazz Tangcay Artisans EditorWhile actor David Oyelowo had been toying with the idea of directing, it wasn’t until “The Water Man” — out May 7 on Netflix — that the opportunity arose for him to step behind the camera.Oyelowo, who starred in last year’s “The Midnight Sky,” felt the family entertainment films of the ’80s were missing from the industry today. As a father of four, he wanted to mimic the films that he had grown up on.