Update kubernetes projects version in vendor to 1.12.1

vendor/github.com/modern-go/reflect2/safe_map.go

@@ -76,8 +76,8 @@ func (type2 *safeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
 }
 
 type safeMapIterator struct {
-	i int
-	m reflect.Value
+	i    int
+	m    reflect.Value
 	keys []reflect.Value
 }
 
@@ -98,4 +98,4 @@ func (iter *safeMapIterator) Next() (interface{}, interface{}) {
 
 func (iter *safeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
 	panic("does not support unsafe operation")
-}
+}