add Metadata field to Image result
diff --git a/openstack/compute/v2/images/results.go b/openstack/compute/v2/images/results.go
index 40e814d..482e7d6 100644
--- a/openstack/compute/v2/images/results.go
+++ b/openstack/compute/v2/images/results.go
@@ -51,6 +51,8 @@
 	Status   string
 
 	Updated string
+	
+	Metadata map[string]string
 }
 
 // ImagePage contains a single page of results from a List operation.