Fix the program cannot be closed when KinD environment has exported multiple ports (#61)

Author: mrproliu

docs/en/setup/Configuration-File.md

@@ -131,7 +131,7 @@ After the `Setup` step is finished, use the `Trigger` step to generate traffic.
 trigger:
   action: http      # The action of the trigger. support HTTP invoke.
   interval: 3s      # Trigger the action every 3 seconds.
-  times: 5          # How many times to trigger the action, 0=infinite.
+  times: 5          # The retry count before the request success.
   url: http://apache.skywalking.com/ # Http trigger url link.
   method: GET       # Http trigger method.
   headers:

internal/components/setup/kind.go

@@ -140,7 +140,7 @@ func KindShouldWaitSignal() bool {
 // KindCleanNotify notify when clean up
 func KindCleanNotify() {
 	if portForwardContext != nil {
-		portForwardContext.stopChannel <- struct{}{}
+		close(portForwardContext.stopChannel)
 		// wait all stopped
 		for i := 0; i < portForwardContext.resourceCount; i++ {
 			<-portForwardContext.resourceFinishedChannel

internal/components/trigger/http.go

@@ -19,6 +19,7 @@ package trigger
 
 import (
 	"fmt"
+	"io"
 	"net/http"
 	"os"
 	"strings"
@@ -124,6 +125,7 @@ func (h *httpAction) execute() error {
 		logger.Log.Errorf("do request error %v", err)
 		return err
 	}
+	_, _ = io.ReadAll(response.Body)
 	_ = response.Body.Close()
 
 	logger.Log.Debugf("do request %v response http code %v", h.url, response.StatusCode)