vendor: update copystructure/reflectwalk

This adds fixes that are needed for ResourceConfig copying, namely
related to copying interfaces, avoiding unexported fields.

vendor/github.com/mitchellh/copystructure/copystructure.go

@@ -295,12 +295,24 @@ func (w *walker) StructField(f reflect.StructField, v reflect.Value) error {
 		return nil
 	}
 
+	// If PkgPath is non-empty, this is a private (unexported) field.
+	// We do not set this unexported since the Go runtime doesn't allow us.
+	if f.PkgPath != "" {
+		w.ignore()
+		return nil
+	}
+
 	// Push the field onto the stack, we'll handle it when we exit
 	// the struct field in Exit...
 	w.valPush(reflect.ValueOf(f))
 	return nil
 }
 
+// ignore causes the walker to ignore any more values until we exit this on
+func (w *walker) ignore() {
+	w.ignoreDepth = w.depth
+}
+
 func (w *walker) ignoring() bool {
 	return w.ignoreDepth > 0 && w.depth >= w.ignoreDepth
 }

vendor/github.com/mitchellh/reflectwalk/reflectwalk.go

@@ -4,9 +4,7 @@
 // those elements.
 package reflectwalk
 
-import (
-	"reflect"
-)
+import "reflect"
 
 // PrimitiveWalker implementations are able to handle primitive values
 // within complex structures. Primitive values are numbers, strings,
@@ -145,6 +143,12 @@ func walkMap(v reflect.Value, w interface{}) error {
 	for _, k := range v.MapKeys() {
 		kv := v.MapIndex(k)
 
+		// if the map value type is an interface, we need to extract the Elem
+		// for the next call to walk
+		if kv.Kind() == reflect.Interface {
+			kv = kv.Elem()
+		}
+
 		if mw, ok := w.(MapWalker); ok {
 			if err := mw.MapElem(v, k, kv); err != nil {
 				return err
@@ -204,6 +208,12 @@ func walkSlice(v reflect.Value, w interface{}) (err error) {
 	for i := 0; i < v.Len(); i++ {
 		elem := v.Index(i)
 
+		// if the value type is an interface, we need to extract the Elem
+		// for the next call to walk
+		if elem.Kind() == reflect.Interface {
+			elem = elem.Elem()
+		}
+
 		if sw, ok := w.(SliceWalker); ok {
 			if err := sw.SliceElem(i, elem); err != nil {
 				return err

vendor/vendor.json

@@ -1472,10 +1472,10 @@
 			"revision": "8631ce90f28644f54aeedcb3e389a85174e067d1"
 		},
 		{
-			"checksumSHA1": "Vfkp+PcZ1wZ4+D6AsHTpKkdsQG0=",
+			"checksumSHA1": "EDAtec3XSbTjw6gWG+NNScows9M=",
 			"path": "github.com/mitchellh/copystructure",
-			"revision": "501dcbdc7c358c4d0bfa066018834bedca79fde3",
-			"revisionTime": "2016-09-16T19:51:24Z"
+			"revision": "8f3c396a26dadccbd29ee24c76c89166249cc16f",
+			"revisionTime": "2016-09-27T21:34:29Z"
 		},
 		{
 			"path": "github.com/mitchellh/go-homedir",
@@ -1507,8 +1507,10 @@
 			"revision": "6e6954073784f7ee67b28f2d22749d6479151ed7"
 		},
 		{
+			"checksumSHA1": "Qfbnn/PnYNR2ZHraUeHTxT4H7lM=",
 			"path": "github.com/mitchellh/reflectwalk",
-			"revision": "eecf4c70c626c7cfbb95c90195bc34d386c74ac6"
+			"revision": "2d53f44828cae4c770d745a3560e37d3356774a6",
+			"revisionTime": "2016-09-27T21:55:38Z"
 		},
 		{
 			"checksumSHA1": "/iig5lYSPCL3C8J7e4nTAevYNDE=",