test_that: Use a relative symlink for test_that_latest for chroot-friendliness

Linking to the absolute path of the latest test results only works from
within the chroot; making the symlink relative makes it easy to access
from outside the chroot as chroot/tmp/test_that_latest/ .

BUG=None
TEST=test_that $machine dummy_Pass

Change-Id: I26c4c276028d5b7424126d3f4aa800e071fe0f35
Reviewed-on: https://chromium-review.googlesource.com/205963
Tested-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Ilja Friedel <ihf@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Commit-Queue: Josh Triplett <josh@joshtriplett.org>
1 file changed