nixosTests.containers-custom-pkgs: lint

The new linter basically does

def testScript
# ...

before calling `pyflakes`. As this test-script is empty, it would lead
to a syntax-error unless `pass` is added.

Changed files
+1 -1
nixos
+1 -1
nixos/tests/containers-custom-pkgs.nix
···
};
# This test only consists of evaluating the test machine
-
testScript = "";
+
testScript = "pass";
})