The British political thriller “Bodyguard” began airing in the UK in August. The first episode drew more than 10 million viewers. It’s the largest audience for a new drama on British TV since “Downton Abbey.” It was so popular that even real life politicians weighed in, including Prime Minister Theresa May. But maybe it was too close to home. May said she couldn’t relax watching it. On Wednesday, Netflix will release all six episodes of the show in 190 countries.