Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

pkg/auth/requestinfo/requestinfo.go

@@ -0,0 +1,25 @@
+package requestinfo
+
+import (
+	"context"
+)
+
+// RequestInfoCtx context key for RequestInfo
+type RequestInfoCtx struct{}
+
+// RequestInfoFromContext retrieves RequestInfo from context
+func RequestInfoFromContext(ctx context.Context) *RequestInfo {
+	v, ok := ctx.Value(RequestInfoCtx{}).(*RequestInfo)
+	if !ok {
+		return nil
+	}
+
+	return v
+}
+
+// RequestInfo store request info for audit
+type RequestInfo struct {
+	Host      string
+	IP        string
+	UserAgent string
+}