pre-upload: force newer eapi versions

BUG=brillo:397
TEST=`./pre-upload_unittest.py` passes

Change-Id: Iaa75da286801b8a112fb080e5904cb46d1783317
Reviewed-on: https://chromium-review.googlesource.com/254310
Reviewed-by: Bertrand Simonnet <bsimonnet@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
2 files changed