device_imager: Add missing board and version

The board and version need to be identified for some use cases of cros
flash that don't define the board, like :

$ cros flash --exp-new-flash chromeos6-row16-rack12-host14.cros xbuddy://remote/latest-canary

BUG=b:182211561
TEST=chromite/run_pytests
TEST=cros flash --exp-new-flash chromeos6-row16-rack12-host14.cros xbuddy://remote/latest-canary

Change-Id: Ic3e550b91e9d67da4bf48f1918a5f37c4c3d2946
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2757928
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Vyshu Khota <vyshu@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
diff --git a/cli/flash.py b/cli/flash.py
index 3764cae..a63f36a 100644
--- a/cli/flash.py
+++ b/cli/flash.py
@@ -592,6 +592,8 @@
         device_imager.DeviceImager(
             device_p,
             image,
+            board=board,
+            version=version,
             no_rootfs_update=not rootfs_update,
             no_stateful_update=not stateful_update,
             no_reboot=not reboot,