Milo: Use luci-config for storing buildbot acls

milo/appengine/frontend/config.go

 // Copyright 2015 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package frontend
 
 import (
         "net/http"
 
         "github.com/luci/luci-go/common/logging"
@@ skipping 11 matching lines @@
                         "Error while getting projects: "+err.Error())
                 return
         }
 
         templates.MustRender(c.Context, c.Writer, "pages/config.html", templates.Args{
                 "Projects": projects,
         })
 }
 
 // UpdateHandler is an HTTP handler that handles configuration update requests.
-func UpdateHandler(ctx *router.Context) {
+// TODO(hinoka): Migrate to cfgclient and remove this.
+func UpdateConfigHandler(ctx *router.Context) {
         c, h := ctx.Context, ctx.Writer
-        err := common.Update(c)
+        err := common.UpdateProjectConfigs(c)
         if err != nil {
                 logging.WithError(err).Errorf(c, "Update Handler encountered error")
                 h.WriteHeader(500)
         }
         logging.Infof(c, "Successfully completed")
         h.WriteHeader(200)
 }