By Christopher Guly OTTAWA – As his Liberal government begins its third mandate, Prime Minister Justin Trudeau could either fill key cabinet roles in Heritage and Industry with fresh faces or stick with the status quo – as he has already by leaving in place Chrystia Freeland as deputy prime minister and finance minister, according to Parliament Hill watchers. Sheila Copps, a former deputy PM who served as minister of the newly created department of Canadian Heritage from 1996 to 2003, would like new leaders recruited for her old job and to head Innovation, Science and Economic Development Canada (ISED)....