John Hopewell Chief International CorrespondentAlief, the London-based sales agent and production outfit, has swooped on bad ass action comedy “Cop Secret” in the build up to the movie’s world premiere at August’s Locarno Film Festival.Brett Walker, Alief president, will introduce the propulsive, high testosterone movie to buyers at Locarno Pro, the Swiss festival’s robust industry program, where it is sure to get tongues wagging.While big fests are embracing genre, few selections to date offer