[autotest] Convert dut_status.py to use elastic search

Convert dut_status.py to search host history from elastic search,
rather than querying the AFE database.

BUG=None
TEST=run the script

Change-Id: I353af367e399e9a96c95e028f87b2b3d20c7354b
Reviewed-on: https://chromium-review.googlesource.com/223369
Reviewed-by: Dan Shi <dshi@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
1 file changed