RUNNER-UP Stone Temple Pilots recruit ‘X Factor’ contestant as new singer   ET Online — The Stone Temple Pilots have a new voice. The band has tapped X Factor season three runner-up Jeff Gutt — who now goes by his full name, Jeffrey Adam Gutt — as its new lead singer, ET has learned. Gutt has been working with band members Dean DeLeo, Robert DeLeo and Eric Kretz for the past few months, writing and recording[…]