“ Karma ,” Guillaume Canet ’s gripping religious cult thriller starring Oscar-winning actor Marion Cotillard , earned a six-minute standing ovation at Cannes on Friday. The edge-of-your-set French movie, which is produced by Iconoclast with Canet’s Caneo banner, world premiered in the Special Screenings section in the official selection.  “Karma” is the second film that Canet has brought to Cannes as a director, following his English-language debut “Blood Ties.” It’s also his sixth movie with