Change v1 API to default RC replicas to 1

pkg/api/v1/defaults.go

@@ -39,6 +39,10 @@ func addDefaultingFuncs() {
 					obj.Labels = labels
 				}
 			}
+			if obj.Spec.Replicas == nil {
+				obj.Spec.Replicas = new(int)
+				*obj.Spec.Replicas = 1
+			}
 		},
 		func(obj *Volume) {
 			if util.AllPtrFieldsNil(&obj.VolumeSource) {