Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5

Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/google.golang.org/appengine/internal/identity_flex.go b/vendor/google.golang.org/appengine/internal/identity_flex.go
new file mode 100644
index 0000000..d5e2e7b
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/identity_flex.go
@@ -0,0 +1,11 @@
+// Copyright 2018 Google LLC. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+// +build appenginevm
+
+package internal
+
+func init() {
+	appengineFlex = true
+}