SPRINGFIELD — In the days leading up to his swearing-in this morning, Gov. J.B. Pritzker filled eight more positions in his administration, including two agency directors originally appointed by former Gov. Bruce Rauner.Heidi Mueller will continue to work as director of the Department of Juvenile Justice and Matt Perez as the state’s fire marshal.Mueller spent nearly five years working for the Department of Juvenile Justice. She was appointed to serve as director by Rauner in 2016 where she oversees the care, custody and …