Change VirtualClusterPolicy scope to Cluster (#358)

* rename clusterset to policy

* fixes

* rename clusterset to policy

* wip

* go mod

* cluster scoped

* gomod

* gomod

* fix lint

* wip

* moved logic to vcp controller

* update for clusters

* small fixes

* update cli

* fix docs, updated spec

* fix cleanup

* added missing owns for limitranges

docs/cli/cli-docs.md

@@ -101,8 +101,6 @@ Create new policy
 
 **--debug**: Turn on debug logs
 
-**--display-name**="": The display name of the policy
-
 **--kubeconfig**="": kubeconfig path (default: $HOME/.kube/config or $KUBECONFIG if set)
 
 **--mode**="": The allowed mode type of the policy (default: "shared")