hydra-module: add config.extraEnv

Dependencies

• [2] 4J33F22T hydra-module.nix: Make it possible to add extra config lines
• [3] 5DEWIOO4 hydra-module.nix: Export the HYDRA_* environment variables
• [4] ZYEFL36Q Ported/merged properties from the TUD configuration's hydra-module
• [5] X6XVDE2C hydra-module: Set GIT_SSL_CAINFO for git over https
• [6] 25DXUDOJ hydra-module.nix: Remove the useWAL option
• [*] D3MDJONY

Change contents

• replacement in hydra-module.nix at line 22
  [4.55]→[3.138:157](∅→∅)
  − } // hydraEnv;
  [4.55]

  [4.0]
  + } // hydraEnv // cfg.extraEnv;
• edit in hydra-module.nix at line 133
  [2.189]

  [8.2521]
  + extraEnv = mkOption {

  + type = types.attrsOf types.str;

  + default = {};

  + description = "Extra environment variables for Hydra";

  + };