Fix for bug 582014

1bf60eb788365f083d0ee8045a6556f906149dec changed machine from hostname
to a dictionary containing hostname. This is a corresponding change
to that CL.

BUG=chromium:582014
TEST=test_that --board=squawks [dut ip] telemetry_Crosperf
     --args=" run_local=False test=octane "

Change-Id: I5b2311a59fe580c7e93d7d7ae1fade93f1331ac6
Reviewed-on: https://chromium-review.googlesource.com/324165
Commit-Ready: Ting-Yuan Huang <laszio@chromium.org>
Tested-by: Ting-Yuan Huang <laszio@chromium.org>
Reviewed-by: Caroline Tice <cmtice@chromium.org>
1 file changed