containerd-stress: use config address for CRI test

This change removes the hard-coded containerd endpoint
for CRI test and use the address in the config which would
honor the CLI flag.

Signed-off-by: Yibo Zhuang <yibzhuang@gmail.com>

cmd/containerd-stress/main.go

@@ -267,10 +267,9 @@ func criTest(c config) error {
 		timeout = 1 * time.Minute
 		wg      sync.WaitGroup
 		ctx     = namespaces.WithNamespace(context.Background(), stressNs)
-		criEndpoint = "unix:///run/containerd/containerd.sock"
 	)
 
-	client, err := remote.NewRuntimeService(criEndpoint, timeout)
+	client, err := remote.NewRuntimeService(c.Address, timeout)
 	if err != nil {
 		return fmt.Errorf("failed to create runtime service: %w", err)
 	}