This commit enhances the UnstructAdapter

* Added support for arbitrary data types rather than just strings
* Added support for integer index-able arrays
* Improve code coverage for kunstruct
  - kunstruct around 90%
  - helper at 100%
* Update expansion.Expand method to preserve the original type of the variable
* Ensure the int field such .spec.replicas can be used
  as a source in a first Deployment or as destination of a variable (in the
  second Deployment variable).

pkg/resource/resource.go

@@ -182,7 +182,7 @@ func (r *Resource) NeedHashSuffix() bool {
 
 // GetNamespace returns the namespace the resource thinks it's in.
 func (r *Resource) GetNamespace() string {
-	namespace, _ := r.GetFieldValue("metadata.namespace")
+	namespace, _ := r.GetString("metadata.namespace")
 	// if err, namespace is empty, so no need to check.
 	return namespace
 }