Run power_LoadTest for 1 hour in power_daily.

Previously power_daily suite if run on wired & wireless could spend
upto 20hrs running power_LoadTest.  Not practical in the test lab
unless the quantity of machines of each SKU + image is reasonably
large.

With https://gerrit.chromium.org/gerrit/#/c/37318/, power_LoadTest now
extrapolates minutes of battery life allowing less than full-drains to
produce reasonable approximations.

BUG=none
TEST=none

Change-Id: I03cb4d2818c4c7bf166700e827e7cea8b5ed41fa
Reviewed-on: https://gerrit.chromium.org/gerrit/37590
Reviewed-by: Todd Broch <tbroch@chromium.org>
Tested-by: Todd Broch <tbroch@chromium.org>
Commit-Ready: Todd Broch <tbroch@chromium.org>
1 file changed