WASHINGTON — The former US intelligence officer who confronted ex-CIA Director John Brennan about his meddling in the 2016 and 2020 presidential elections told The Post in an interview this week that the Trump administration’s investigation of Brennan has to be about “restoration” of the public’s trust — not “revenge” — if it is to succeed. Thomas Speciale, a veteran of the Defense Intelligence Agency (DIA) and the Office of the Director of National Intelligence (ODNI), said he chose to attend