[autotest] Force to use sudo to check if base container exists.

We can change base folder's permission, but that's too much manual work. And
if base container is rebuilt and we forgot to change its permission, it might
leave ssp being broken on the drone for a long time. A simple sudo should work
just fine.

BUG=chromium:453614
TEST=in drone with ssp supported (destiny7)

Change-Id: Ie31c7f4c6a0c27971a585146c98b51f7da5aad7c
Reviewed-on: https://chromium-review.googlesource.com/263976
Trybot-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Simran Basi <sbasi@chromium.org>
1 file changed