By Charlie Conchie Air Astana is set for a London listing. Charlie Conchie talks to the airline’s chief about the upcoming move.Peter Foster is peering out of his window into the mountains around the Kazakhstani city of Almaty. “It’s an attractive place,” the British chief of Air Astana tells City A.M.. “It’s pretty snowbound here, we’ve got a great ski resort up the road. Almaty is a great city. It’s a friendly place. The people are very welcoming.” Banging the drum for Kazakhstan is something Foster’s likely become used to in his 18 years leading the country’s flag carrier. But occupying his…