Support unknown state for sandbox and container

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/server/container_status.go

@@ -60,6 +60,15 @@ func (c *criService) ContainerStatus(ctx context.Context, r *runtime.ContainerSt
 		}
 	}
 	status := toCRIContainerStatus(container, spec, imageRef)
+	if status.GetCreatedAt() == 0 {
+		// CRI doesn't allow CreatedAt == 0.
+		info, err := container.Container.Info(ctx)
+		if err != nil {
+			return nil, errors.Wrapf(err, "failed to get CreatedAt in %q state", status.State)
+		}
+		status.CreatedAt = info.CreatedAt.UnixNano()
+	}
+
 	info, err := toCRIContainerInfo(ctx, container, r.GetVerbose())
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to get verbose container info")