nixos: kubernetes fixes

* Fix reference CNI plugins
  * The plugins were split out of the upstream cni repo around version
    0.6.0

* Fix RBAC and DNS tests
  * Fix broken apiVersion fields
  * Change plugin linking to look in ${package}/bin rather than
    ${package.plugins}

* Initial work towards a working e2e test
  * Test still fails, but at least the expression evaluates now

Continues @srhb's work in #37199

Fixes #37199

pkgs/applications/networking/cluster/cni/default.nix

@@ -13,17 +13,14 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ go ];
 
-  outputs = ["out" "plugins"];
-
   buildPhase = ''
     patchShebangs build.sh
     ./build.sh
   '';
 
   installPhase = ''
-    mkdir -p $out/bin $plugins
+    mkdir -p $out/bin
     mv bin/cnitool $out/bin
-    mv bin/* $plugins/
   '';
 
   meta = with stdenv.lib; {