update_chroot: add dev-lang/go to the list of toolchain packages.

This makes sure dev-lang/go is only updated with a binpkg from a
toolchain rollout by the chromiumos sdk builder.

BUG=None
TEST=chroot update during creation works.

Change-Id: I065561b9e19b2bd00ca0dd392a847e908a66a8ef
Reviewed-on: https://chromium-review.googlesource.com/290055
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Rahul Chaudhry <rahulchaudhry@chromium.org>
Tested-by: Rahul Chaudhry <rahulchaudhry@chromium.org>
1 file changed