provider/kubernetes: Use PATCH to update namespace (#13114)

builtin/providers/kubernetes/resource_kubernetes_namespace.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/hashicorp/terraform/helper/resource"
 	"github.com/hashicorp/terraform/helper/schema"
+	pkgApi "k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/errors"
 	api "k8s.io/kubernetes/pkg/api/v1"
 	kubernetes "k8s.io/kubernetes/pkg/client/clientset_generated/release_1_5"
@@ -69,15 +70,14 @@ func resourceKubernetesNamespaceRead(d *schema.ResourceData, meta interface{}) e
 func resourceKubernetesNamespaceUpdate(d *schema.ResourceData, meta interface{}) error {
 	conn := meta.(*kubernetes.Clientset)
 
-	metadata := expandMetadata(d.Get("metadata").([]interface{}))
-	// This is necessary in case the name is generated
-	metadata.Name = d.Id()
-
-	namespace := api.Namespace{
-		ObjectMeta: metadata,
+	ops := patchMetadata("metadata.0.", "/metadata/", d)
+	data, err := ops.MarshalJSON()
+	if err != nil {
+		return fmt.Errorf("Failed to marshal update operations: %s", err)
 	}
-	log.Printf("[INFO] Updating namespace: %#v", namespace)
-	out, err := conn.CoreV1().Namespaces().Update(&namespace)
+
+	log.Printf("[INFO] Updating namespace: %s", ops)
+	out, err := conn.CoreV1().Namespaces().Patch(d.Id(), pkgApi.JSONPatchType, data)
 	if err != nil {
 		return err
 	}