By Tobias Carroll Since 2007, the Stagecoach festival has hosted some of the biggest names in country music. It shares an organizer with the Coachella Valley Music and Arts Festival, and occupies a similar position relative to the genre in question. This year, however, there’s one change to the festival’s policies — attendees planning to bring a Confederate flag with them are going to find it impossible to do so. Pitchfork reports that the festival updated their policies regarding what can and cannot be brought into the festival. According to the festival’s rules page, attendees can’t bring “d…