Issue description

OSInfo: Failed to execute lsb_release

It would be nice that the anonymous usage statistics include NixOS, so people see that it exists and is used!

Depends on #22729

Steps to reproduce

Start mumble the first time and allow anonymous usage statistics to be sent.

Technical details

mumble is installed from unstable.

• system: "x86_64-linux"
• host os: Linux 4.14.84, NixOS, 18.09.1446.db561c90ef3 (Jellyfish)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.1.3
• channels(davidak): ""
• channels(root): "nixos-18.09.1446.db561c90ef3, nixos-hardware, nixos-unstable-19.03pre159472.80738ed9dc0"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos