[autotest] Add start, end flags to host history and aggregation info
We can now get aggregated host history across many hosts. We can also
specify a time range from which to query for host history.
BUG=chromium:394451
TEST=python host_history.py --index=cautotest -n 10000 \
--board=daisy --pool=bvt \
--start="2014-07-24 10:24:07" \
--end="2014-07-24 12:24:07"
Change-Id: I172acbc066175c072a16723c6460ed580bb80e5e
Reviewed-on: https://chromium-review.googlesource.com/210532
Tested-by: Michael Liang <michaelliang@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Michael Liang <michaelliang@chromium.org>
2 files changed