Reverb is hosting an online auction that features items donated by Loretta Lynn, Kacey Musgraves, Dolly Parton, Lauren Alaina, Little Big Town, Reba McEntire, Wynonna, Faith Hill, Cassadee Pope, Margo Price, Lindsay Ell and more. Proceeds will benefit 10 Girls Rock camps in the U.S. and Europe, with the goal of fostering music education for…