Bump Libcontainer to latest head

vendor/github.com/opencontainers/runc/libcontainer/init_linux.go

@@ -52,19 +52,21 @@ type initConfig struct {
 	AppArmorProfile  string           `json:"apparmor_profile"`
 	NoNewPrivileges  bool             `json:"no_new_privileges"`
 	User             string           `json:"user"`
+	AdditionalGroups []string         `json:"additional_groups"`
 	Config           *configs.Config  `json:"config"`
 	Console          string           `json:"console"`
 	Networks         []*network       `json:"network"`
 	PassedFilesCount int              `json:"passed_files_count"`
 	ContainerId      string           `json:"containerid"`
 	Rlimits          []configs.Rlimit `json:"rlimits"`
+	ExecFifoPath     string           `json:"start_pipe_path"`
 }
 
 type initer interface {
 	Init() error
 }
 
-func newContainerInit(t initType, pipe *os.File) (initer, error) {
+func newContainerInit(t initType, pipe *os.File, stateDirFD int) (initer, error) {
 	var config *initConfig
 	if err := json.NewDecoder(pipe).Decode(&config); err != nil {
 		return nil, err
@@ -79,9 +81,10 @@ func newContainerInit(t initType, pipe *os.File) (initer, error) {
 		}, nil
 	case initStandard:
 		return &linuxStandardInit{
-			pipe:      pipe,
-			parentPid: syscall.Getppid(),
-			config:    config,
+			pipe:       pipe,
+			parentPid:  syscall.Getppid(),
+			config:     config,
+			stateDirFD: stateDirFD,
 		}, nil
 	}
 	return nil, fmt.Errorf("unknown init type %q", t)
@@ -211,8 +214,8 @@ func setupUser(config *initConfig) error {
 	}
 
 	var addGroups []int
-	if len(config.Config.AdditionalGroups) > 0 {
-		addGroups, err = user.GetAdditionalGroupsPath(config.Config.AdditionalGroups, groupPath)
+	if len(config.AdditionalGroups) > 0 {
+		addGroups, err = user.GetAdditionalGroupsPath(config.AdditionalGroups, groupPath)
 		if err != nil {
 			return err
 		}