milo: fix running steps

client/cmd/logdog_annotee/main.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 main
 
 import (
         "encoding/json"
         "errors"
         "flag"
@@ skipping 214 matching lines @@
         if !linkGen.canGenerateLinks() {
                 linkGen = nil
         }
 
         e := executor.Executor{
                 Options: annotee.Options{
                         Base:                   types.StreamName(a.nameBase),
                         LinkGenerator:          linkGen,
                         Client:                 client,
                         MetadataUpdateInterval: time.Duration(a.annotationInterval),
+                        CloseSteps:             true,
                 },
 
                 Annotate: executor.AnnotationMode(a.annotate),
                 Stdin:    os.Stdin,
         }
         if a.tee {
                 e.TeeStdout = os.Stdout
                 e.TeeStderr = os.Stderr
         }
         if err := e.Run(a, args); err != nil {
@@ skipping 21 matching lines @@
         }
         if err := a.maybeWriteResult(&br); err != nil {
                 log.WithError(err).Warningf(a, "Failed to write bootstrap result.")
         }
         return e.ReturnCode()
 }
 
 func main() {
         os.Exit(mainImpl(os.Args[1:]))
 }