pushimage.py: Push miniOS provisioning payloads

.. into the release buckets.

Can be used from either archive or release buckets then.

BUG=b:202294115
TEST=./run_tests scripts/pushimage_unittest.py

Change-Id: I325a318abd19d3516892089f81c381f3b7797984
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3208675
Tested-by: Jae Hoon Kim <kimjae@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: George Engelbrecht <engeg@google.com>
Commit-Queue: Jae Hoon Kim <kimjae@chromium.org>
diff --git a/scripts/pushimage.py b/scripts/pushimage.py
index 21f8493..bd16e5c 100644
--- a/scripts/pushimage.py
+++ b/scripts/pushimage.py
@@ -419,6 +419,7 @@
         ('dlc', None, None),
         (constants.QUICK_PROVISION_PAYLOAD_KERNEL, None, None),
         (constants.QUICK_PROVISION_PAYLOAD_ROOTFS, None, None),
+        (constants.QUICK_PROVISION_PAYLOAD_MINIOS, None, None),
     )
 
     # The following build artifacts, if present, are always copied.