au-generator.zip: Add blockdev to au-generator.zip.

We need blockdev to rescan for for partitions if losetup --partscan doesn't
work.

BUG=None
TEST=Ran a butterfly-paladin tryjob.

Change-Id: Ibd0b66a940e21dbc6221e971512b160f6dacf8a7
Reviewed-on: https://chromium-review.googlesource.com/219480
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
1 file changed