Pin dependency github.com/cilium/ebpf

Use same as opencontainers/runc

vendor/github.com/cilium/ebpf/feature.go

@@ -0,0 +1,19 @@
+package ebpf
+
+import (
+	"sync"
+)
+
+type featureTest struct {
+	Fn func() bool
+
+	once   sync.Once
+	result bool
+}
+
+func (ft *featureTest) Result() bool {
+	ft.once.Do(func() {
+		ft.result = ft.Fn()
+	})
+	return ft.result
+}