Revert of Use classic GAE for coordinator default frontend.

logdog/appengine/cmd/coordinator/vmuser/main.go

Index: logdog/appengine/cmd/coordinator/vmuser/main.go
diff --git a/logdog/appengine/cmd/coordinator/vmuser/main.go b/logdog/appengine/cmd/coordinator/vmuser/main.go
index 6ca09cb59928e6ddd05f96e07b0b6a22a197878a..560c7f34af2d33daeafeecc28047a31aada98fa9 100644
--- a/logdog/appengine/cmd/coordinator/vmuser/main.go
+++ b/logdog/appengine/cmd/coordinator/vmuser/main.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
-package module
+package main
 
 import (
 	"net/http"
@@ -27,6 +27,7 @@
 	"github.com/luci/luci-go/server/router"
 
 	"golang.org/x/net/context"
+	"google.golang.org/appengine"
 
 	// Include mutations package so its Mutations will register with tumble via
 	// init().
@@ -34,7 +35,7 @@
 )
 
 // Run installs and executes this site.
-func init() {
+func main() {
 	r := router.New()
 
 	// Setup Cloud Endpoints.
@@ -58,6 +59,7 @@
 	})
 
 	http.Handle("/", r)
+	appengine.Main()
 }
 
 func accessControl(c context.Context, origin string) bool {