Update vendor

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

@@ -0,0 +1,37 @@
+// +build linux freebsd
+
+package libcontainer
+
+// cgroup restoring strategy provided by criu
+type cg_mode uint32
+
+const (
+	CRIU_CG_MODE_SOFT    cg_mode = 3 + iota // restore cgroup properties if only dir created by criu
+	CRIU_CG_MODE_FULL                       // always restore all cgroups and their properties
+	CRIU_CG_MODE_STRICT                     // restore all, requiring them to not present in the system
+	CRIU_CG_MODE_DEFAULT                    // the same as CRIU_CG_MODE_SOFT
+)
+
+type CriuPageServerInfo struct {
+	Address string // IP address of CRIU page server
+	Port    int32  // port number of CRIU page server
+}
+
+type VethPairName struct {
+	ContainerInterfaceName string
+	HostInterfaceName      string
+}
+
+type CriuOpts struct {
+	ImagesDirectory         string             // directory for storing image files
+	WorkDirectory           string             // directory to cd and write logs/pidfiles/stats to
+	LeaveRunning            bool               // leave container in running state after checkpoint
+	TcpEstablished          bool               // checkpoint/restore established TCP connections
+	ExternalUnixConnections bool               // allow external unix connections
+	ShellJob                bool               // allow to dump and restore shell jobs
+	FileLocks               bool               // handle file locks, for safety
+	PageServer              CriuPageServerInfo // allow to dump to criu page server
+	VethPairs               []VethPairName     // pass the veth to criu when restore
+	ManageCgroupsMode       cg_mode            // dump or restore cgroup mode
+	EmptyNs                 uint32             // don't c/r properties for namespace from this mask
+}