vendor: update c/common

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

vendor/github.com/opencontainers/cgroups/fs/perf_event.go

@@ -0,0 +1,23 @@
+package fs
+
+import (
+	"github.com/opencontainers/cgroups"
+)
+
+type PerfEventGroup struct{}
+
+func (s *PerfEventGroup) Name() string {
+	return "perf_event"
+}
+
+func (s *PerfEventGroup) Apply(path string, _ *cgroups.Resources, pid int) error {
+	return apply(path, pid)
+}
+
+func (s *PerfEventGroup) Set(_ string, _ *cgroups.Resources) error {
+	return nil
+}
+
+func (s *PerfEventGroup) GetStats(path string, stats *cgroups.Stats) error {
+	return nil
+}