Gerrit will let you push a patch without a signed-off-by line,
although I believe it can't actually be merged. Instead of catching
it either manually, or when the patch is attempting to be merged,
catch this in the jenkins builder.
Change-Id: I80161befa157266dd4e3209839a06ff398aab6bb
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17941
Tested-by: build bot (Jenkins)
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
