bootstrap.py: nixos check in /etc/os-release with quotes

Per https://www.freedesktop.org/software/systemd/man/os-release.html,

> Variable assignment values must be enclosed in double or single quotes
> if they include spaces, semicolons or other special characters outside
> of A–Z, a–z, 0–9. (Assignments that do not include these special
> characters may be enclosed in quotes too, but this is optional.)

So, past `ID=nixos`, let's also check for `ID='nixos'` and `ID="nixos"`.

One of these is necessary between NixOS/nixpkgs#162168 and
NixOS/nixpkgs#164068, but this seems more correct either way.

Author: ben0x539

src/bootstrap/bootstrap.py

@@ -678,7 +678,7 @@ def fix_bin_or_dylib(self, fname):
             # The latter one does not exist on NixOS when using tmpfs as root.
             try:
                 with open("/etc/os-release", "r") as f:
-                    if not any(line.strip() == "ID=nixos" for line in f):
+                    if not any(l.strip() in ["ID=nixos", "ID='nixos'", 'ID="nixos"'] for l in f):
                         return
             except FileNotFoundError:
                 return