DETROIT — A federal judge on Monday sentenced the U.S. division of Stellantis NV to pay $300 million in penalties and forfeitures for cheating on government emissions testing on “clean EcoDiesel” for Jeep Grand Cherokee SUVs and Ram 1500 pickup trucks. FCA U.S. LLC pleaded guilty to the criminal conspiracy charge in June. It was the second guilty plea for federal criminal conduct by the company in as many years for actions taken prior to parent Fiat Chrysler Automobiles NV’s merger with French automaker Groupe PSA that created Stellantis last year. As federal emissions standards have become mo…