By Dietrich Knauth (Reuters) -A lawyer for two Ohio counties said on Monday that CVS Health Corp, Walgreens Boots Alliance Inc and Walmart Inc should fund an $878 million plan to address the opioid crisis there, as a first-of-its-kind trial got underway to determine the pharmacy chains’ contribution. A federal jury decided in November that the companies created a public nuisance by flooding Ohio’s Lake and Trumbull counties with addictive prescription pain pills that wound up on the black market, in the first trial the pharmacy chains faced over the crisis. Now, the counties want the companies…