LOS ANGELES — He has served as Warrant’s bass player from the very beginning, through the early days, the good times, the bad, and now the good again. Jerry Dixon continues to pluck away, and at 47 years old, there are good times still ahead, as Warrant remains a popular touring band thanks to such monster hits as “Heaven,” “Cherry Pie,” “Down Boys” and others that found their way onto MTV’s regular rotation and FM[…]