Bumping k8s dependencies to 1.13

vendor/golang.org/x/tools/cmd/stringer/testdata/conv.go

@@ -0,0 +1,41 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Check that constants defined as a conversion are accepted.
+
+package main
+
+import "fmt"
+
+type Other int // Imagine this is in another package.
+
+const (
+	alpha Other = iota
+	beta
+	gamma
+	delta
+)
+
+type Conv int
+
+const (
+	Alpha = Conv(alpha)
+	Beta  = Conv(beta)
+	Gamma = Conv(gamma)
+	Delta = Conv(delta)
+)
+
+func main() {
+	ck(Alpha, "Alpha")
+	ck(Beta, "Beta")
+	ck(Gamma, "Gamma")
+	ck(Delta, "Delta")
+	ck(42, "Conv(42)")
+}
+
+func ck(c Conv, str string) {
+	if fmt.Sprint(c) != str {
+		panic("conv.go: " + str)
+	}
+}