integration: Enables Windows containerd restart test

The test sets container's Linux.SecurityContext.NamespaceOptions.Pid = NamespaceMode_CONTAINER,
which will ensure that the container keeps running even if the sandbox container dies. We do
not have that option on Windows.

Adds additional logging in the test, so it is easier to figure out which assertion failed.

Signed-off-by: Claudiu Belu <cbelu@cloudbasesolutions.com>

integration/main_test.go

@@ -24,6 +24,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	goruntime "runtime"
 	"strconv"
 	"strings"
 	"testing"
@@ -338,7 +339,14 @@ func Randomize(str string) string {
 
 // KillProcess kills the process by name. pkill is used.
 func KillProcess(name string) error {
-	output, err := exec.Command("pkill", "-x", fmt.Sprintf("^%s$", name)).CombinedOutput()
+	var command []string
+	if goruntime.GOOS == "windows" {
+		command = []string{"tskill", strings.TrimSuffix(name, ".exe")}
+	} else {
+		command = []string{"pkill", "-x", fmt.Sprintf("^%s$", name)}
+	}
+
+	output, err := exec.Command(command[0], command[1:]...).CombinedOutput()
 	if err != nil {
 		return errors.Errorf("failed to kill %q - error: %v, output: %q", name, err, output)
 	}