Fix paths

Dependencies

• [2] TTZ26BJQ Unify Hydra's NixOS module with the one used for hydra.nixos.org
• [3] KVDOL4OZ hydra-module: Don't rely on su being available.
• [4] V4R3SIRM hydra-module.nix: Don't use a password
• [*] D3MDJONY

Change contents

• replacement in hydra-module.nix at line 216
  [2.1350]→[2.1350:1447](∅→∅)
  − mkdir -m 0700 -p /var/lib/hydra/www

  − chown hydra-www.hydra /var/lib/hydra/www
  [2.1350]

  [2.1447]
  + mkdir -m 0700 -p ${baseDir}/www

  + chown hydra-www.hydra ${baseDir}/www
• replacement in hydra-module.nix at line 219
  [2.1448]→[2.1448:1651](∅→∅)
  − mkdir -m 0700 -p /var/lib/hydra/queue-runner

  − mkdir -m 0750 -p /var/lib/hydra/build-logs

  − chown hydra-queue-runner.hydra /var/lib/hydra/queue-runner /var/lib/hydra/build-logs
  [2.1448]

  [2.1651]
  + mkdir -m 0700 -p ${baseDir}/queue-runner

  + mkdir -m 0750 -p ${baseDir}/build-logs

  + chown hydra-queue-runner.hydra ${baseDir}/queue-runner ${baseDir}/build-logs