Gerard Butler is the Prince of January. You could print calendars now with the knowledge that the Scottish actor will invariably open the year with some kind of action bombast, ranging from the goofy (last year’s “Den of Thieves 2: Pantera”) to the earnest – this year’s disaster movie sequel “Greenland 2: Migration.” Butler reunites with his “Kandahar,” “Angel Has Fallen” and “Greenland” director Ric Roman Waugh for the film, and much like “Den of Thieves 2,” the film sees our star setting out for the south of France, under, of course, very different circumstances.