The man who sparked national outrage when he shot and killed a Canton police dog during a burglary in January was sentenced Wednesday to 45 years in prison.Kelontre D. Barefield, 23, pleaded guilty to a list of charges stemming from multiple court cases on Wednesday. Specific to K-9 Jethro’s death, Barefield was sentenced to six years — the maximum allowed by state law.Jethro was among a group of officers, including his handler Ryan Davis, who responded to a burglary in Canton on Jan.