Machine Gun Kelly and G-Eazy find peace and prosperity amid the lingering scent of champagne. While Machine Gun Kelly’s widely publicized feud with Eminem set September 2018 (a month hip-hop historians have come to dub “World War White,”) ablaze, it’s easy to forget that Gunner found himself sparring with another foe: Young Gerald of the Bay. Before “Killshot,” G-Eazy and Machine Gun Kelly traded shots on …