nixos-test-driver: avoid top-level with in shell.nix

Changed files
+4 -2
nixos
lib
test-driver
+4 -2
nixos/lib/test-driver/shell.nix
···
-
with import ../../.. {};
-
pkgs.callPackage ./default.nix {}
+
{
+
pkgs ? import ../../.. { },
+
}:
+
pkgs.callPackage ./default.nix { }