fix: copyright-add

Signed-off-by: Xinwei Xiong (cubxxw) <3293172751nss@gmail.com>

pkg/common/discoveryregister/kubernetes/kubernetes.go

@@ -16,11 +16,17 @@ package kubernetes
 
 import (
 	"context"
+	"errors"
 	"fmt"
+	"os"
+	"strconv"
+	"strings"
 
 	"google.golang.org/grpc"
 
 	"github.com/OpenIMSDK/tools/discoveryregistry"
+	"github.com/OpenIMSDK/tools/log"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
 )
 
 // K8sDR represents the Kubernetes service discovery and registration client.