vendor: cadvisor v0.39.0

Main upgrades:
- github.com/opencontainers/runc v1.0.0-rc93
- github.com/containerd/containerd v1.4.4
- github.com/docker/docker v20.10.2
- github.com/mrunalp/fileutils v0.5.0
- github.com/opencontainers/selinux v1.8.0
- github.com/cilium/ebpf v0.2.0

vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/cpu.go

@@ -6,7 +6,6 @@ import (
 	"bufio"
 	"fmt"
 	"os"
-	"path/filepath"
 	"strconv"
 
 	"github.com/opencontainers/runc/libcontainer/cgroups"
@@ -87,7 +86,7 @@ func (s *CpuGroup) Set(path string, cgroup *configs.Cgroup) error {
 }
 
 func (s *CpuGroup) GetStats(path string, stats *cgroups.Stats) error {
-	f, err := os.Open(filepath.Join(path, "cpu.stat"))
+	f, err := fscommon.OpenFile(path, "cpu.stat", os.O_RDONLY)
 	if err != nil {
 		if os.IsNotExist(err) {
 			return nil