Dolly Parton has released two new tracks from her rock album “Rockstar” (out November 17). Among them are a new song, titled “Bygones,” which features Judas Priest’s Rob Halford and Mötley Crüe’s Nikki Sixx and John 5, and a cover of Heart’s “Magic Man,” which features Ann Wilson. Parton said the following about “Bygones”: “‘Bygones’…