Fix it test setup issue for envtest k8s >v1.20

The issue kubernetes-sigs/controller-runtime#1571

test/integration/suite_test.go

@@ -1,6 +1,7 @@
 package integration
 
 import (
+	"context"
 	"path/filepath"
 	"testing"
 
@@ -26,6 +27,9 @@ import (
 // These tests use Ginkgo (BDD-style Go testing framework). Refer to
 // http://onsi.github.io/ginkgo/ to learn more about Ginkgo.
 
+var ctx context.Context
+var cancel context.CancelFunc
+
 var (
 	k8sClient client.Client
 	testEnv   *envtest.Environment
@@ -115,14 +119,17 @@ var _ = BeforeSuite(func() {
 	).SetupWithManager(k8sManager)
 	Expect(err).ToNot(HaveOccurred())
 
+	ctx, cancel = context.WithCancel(ctrl.SetupSignalHandler())
+
 	go func() {
-		err = k8sManager.Start(ctrl.SetupSignalHandler())
+		err = k8sManager.Start(ctx)
 		Expect(err).ToNot(HaveOccurred())
 	}()
 
 })
 
 var _ = AfterSuite(func() {
+	cancel()
 	By("tearing down the test environment")
 	err := testEnv.Stop()
 	Expect(err).NotTo(HaveOccurred())