fix lint

test/integration/preload_test.go

@@ -16,6 +16,16 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+package integration
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"strings"
+	"testing"
+)
+
 func TestPreload(t *testing.T) {
 	if NoneDriver() {
 		t.Skipf("skipping %s - incompatible with none driver", t.Name())