allow cluster scoped CRDs for cluster scoped stacks

allow cluster scoped CRDs for cluster scoped stacks

> git diff
diff --git a/pkg/stacks/steps.go b/pkg/stacks/steps.go
index a89ab1ec..31a7a676 100644
--- a/pkg/stacks/steps.go
+++ b/pkg/stacks/steps.go
@@ -81,10 +81,6 @@ func crdStep(sp StackPackager) walker.Step {
                        return errors.Wrap(err, fmt.Sprintf("invalid crd %q", path))
                }
​
-               if (crd.Spec.Scope != apiextensions.NamespaceScoped) && (crd.Spec.Scope != "") {
-                       return errors.New(fmt.Sprintf("Stack CRD %q must be namespaced scope", path))
-               }
-
                sp.AddCRD(filepath.Dir(path), crd)
                return nil
        }
diff --git a/pkg/stacks/unpack.go b/pkg/stacks/unpack.go
index dcb87c46..8b68d776 100644
--- a/pkg/stacks/unpack.go
+++ b/pkg/stacks/unpack.go
@@ -273,6 +273,12 @@ func (sp *StackPackage) AddIcon(path string, icon v1alpha1.IconSpec) {
 // AddCRD appends a CRD to the CRDs of this StackPackage
 // The CRD will be annotated before being added and the Stack will track ownership of this CRD.
 func (sp *StackPackage) AddCRD(path string, crd *apiextensions.CustomResourceDefinition) {
+
+       if sp.Stack.Spec.PermissionScope == "Namespaced" &&
+               (crd.Spec.Scope != apiextensions.NamespaceScoped || crd.Spec.Scope == "") {
+               return errors.New(fmt.Sprintf("Stack CRD %q must be namespaced scope", path))
+       }
+
        if crd.ObjectMeta.Annotations == nil {
                crd.ObjectMeta.Annotations = map[string]string{}
        }