In a major shakeup that puts California’s beleaguered bullet train firmly under Gavin Newsom’s thumb, the governor has installed two of his closest allies to the High-Speed Rail Authority board. Jason Elliott, a longtime political adviser and former deputy chief of staff in the Newsom administration, was appointed Friday to the board along with Steve Kawa, who’s also served as an adviser after working as Newsom’s chief of staff during his time as mayor of San Francisco. The pair will replace outgoing board Chair Tom Richards and Vice Chair Nancy Miller. In a major shakeup that puts California’s beleaguered bullet train firmly under Gavin Newsom’s thumb, the governor has installed two of his closest allies to the High-Speed Rail Authority board.…