[autotest] Report all states collected by devserver's check_health call.

This will collect all performance data from devservers.

BUG=chromium:486278
TEST=local test run to access devserver

Change-Id: If3db95010b36c700dd52dd50f44eb0e971d26955
Reviewed-on: https://chromium-review.googlesource.com/273552
Trybot-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Fang Deng <fdeng@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
1 file changed