SAN JOSE, Calif. – The San Jose Sharks allowed a go-ahead power-play goal to Robert Thomas early in the second period and couldn’t find the equalizer in what became a 3-1 loss to the St. Louis Blues on Thursday. With the Sharks trying to kill a holding penalty to Timo Meier, Thomas took a pass from Vladimir Tarasenko and snapped it past goalie James Reimer for his 20th goal of the season and a 2-1 Blues lead just 31 seconds into the second period. The Sharks went without a shot on goal for the first 10 minutes of the second period and finished with 21 for the game, as they had to kill five min…