Update vendor

vendor/github.com/labstack/echo/cookbook/google-app-engine/app-managed.go

@@ -0,0 +1,25 @@
+// +build appenginevm
+
+package main
+
+import (
+	"net/http"
+
+	"github.com/labstack/echo"
+	"google.golang.org/appengine"
+)
+
+func createMux() *echo.Echo {
+	e := echo.New()
+	// note: we don't need to provide the middleware or static handlers
+	// for the appengine vm version - that's taken care of by the platform
+	return e
+}
+
+func main() {
+	// the appengine package provides a convenient method to handle the health-check requests
+	// and also run the app on the correct port. We just need to add Echo to the default handler
+	e := echo.New(":8080")
+	http.Handle("/", e)
+	appengine.Main()
+}