Refactor:

- Support for module features
- Remove kubenix.module and rather use explicit modules
- Make tests framework independent of k8s module
- Remove metacontroller submodule, which will go to kubenix-modules
- Improved submodule propagation and passthru
- Added additional test for k8s-submodule

modules/default.nix

@@ -2,9 +2,9 @@
   k8s = ./k8s.nix;
   istio = ./istio.nix;
   submodules = ./submodules.nix;
+  submodule = ./submodule.nix;
   helm = ./helm.nix;
   docker = ./docker.nix;
-  metacontroller = ./metacontroller;
   testing = ./testing.nix;
   test = ./test.nix;
   module = ./module.nix;