Bump v1.10's Golang version to v1.20

Signed-off-by: Xun Jiang <blackpiglet@gmail.com>

pkg/cmd/cli/nodeagent/server.go

@@ -173,7 +173,12 @@ func (s *nodeAgentServer) run() {
 		metricsMux := http.NewServeMux()
 		metricsMux.Handle("/metrics", promhttp.Handler())
 		s.logger.Infof("Starting metric server for node agent at address [%s]", s.metricsAddress)
-		if err := http.ListenAndServe(s.metricsAddress, metricsMux); err != nil {
+		server := &http.Server{
+			Addr:              s.metricsAddress,
+			Handler:           metricsMux,
+			ReadHeaderTimeout: 3 * time.Second,
+		}
+		if err := server.ListenAndServe(); err != nil {
 			s.logger.Fatalf("Failed to start metric server for node agent at [%s]: %v", s.metricsAddress, err)
 		}
 	}()

pkg/cmd/cli/nodeagent/server_test.go

@@ -5,7 +5,7 @@ Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
-    http://www.apache.org/licenses/LICENSE-2.0
+http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,