ST. PAUL, Minn. — Former Minnesota Gov. Jesse Ventura won $1.8 million Tuesday in his two-year fight to prove he was defamed by a military sniper and best-selling author who claimed to have punched out Ventura at a bar for bad-mouthing the Navy SEALs. A federal jury sided with Ventura in his lawsuit against “American Sniper” author Chris Kyle, who was killed last year in Texas. Though Ventura honed a tough-guy reputation as a pro wrestler and action movie actor, he maintained the legal battle was …