nixos/tests/stalwart-mail: Add test for server version >= 0.7

[onny]

Description of changes

Going to add test for stalwart-mail 0.8 beside already implemented test for stalwart-mail_0_6

Continuation of #304812
Fixes #303156

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[onny]

Somehow tests for both versions succeed but stalwart-mail 0.8 throws some errors about configuration syntax

[onny]

stalwart-mail 0.8 throws following errors while the test itself succeeds

machine # [    6.527263] stalwart-mail[800]: ERROR: Build error for key "*": Failed to update configuration: Internal Error: Failed to write local configuration file: Read-only file system (os error 30)
machine # [    6.533033] stalwart-mail[800]: ERROR: Build error for key "certificate.snakeoil": No certificates found.

maybe we can ignore the first error because we'll leave the configuration file read-only

[onny]

Okay all errors are fixed now :)

[pacien]

Beside the remark about the new default for the local public suffixes list, looks good to me 👍

[pacien]

I didn't check, but the passthru.tests of the corresponding packages might also need to be updated to reference their respective NixOS tests.

[onny]

I didn't check, but the passthru.tests of the corresponding packages might also need to be updated to reference their respective NixOS tests.

The passthru.tests will run always the stalwart-mail test for both packages, hope that's fine :)

[github-actions]

Successfully created backport PR for release-24.05:

• [Backport release-24.05] nixos/tests/stalwart-mail: Add test for server version >= 0.7 #313960