sandbox: upgraded package to upstream

Upgraded sys-apps/sandbox to version 2.11-r2 for all.

BUG=chromium:586444
TEST=precq passes

Change-Id: If3c7b0933757bbf454b5c1243efc7b312a78cf81
Reviewed-on: https://chromium-review.googlesource.com/339550
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
12 files changed