A Connecticut man has been sentenced to more than eight years in federal prison for his participation in a violent carjacking and a Waterbury-based drug trafficking ring. Luis Cruz, also known as “Goldo,” 27, of Waterbury, was sentenced on Wednesday by U.S. District Judge Kari A. Dooley in Bridgeport to a total of 97 months in prison followed by three years of supervised release, according to the U.S. Attorney’s Office. Cruz previously pleaded g…