o Minor features (authorities, testing):
    - Create TestingDirAuthVoteHSDir like TestingDirAuthVoteExit/Guard.
      Ensures that authorities vote the HSDir flag for the listed
      relays regardless of uptime or ORPort connectivity.
      Respects the value of VoteOnHidServDirectoriesV2.
      Partial fix for bug 14067. Patch by "teor".