crosperf: Add dut config arguments to experiment

In global settings added optional arguments:
"cooldown_time" - wait time prior running a benchmark (default: 0),
"cooldown_temp" - temperature threshold for waiting (default: 40),
"governor" - CPU governor (default: performance),
"cpu_usage" - Restrict CPU usage to specific configurations (default: all).

"turbostat" argument is moved from benchmark to global settings.

Current CL does not apply configurations.
Instead it just propagates parameters to SuiteRunner class
through "dut_config" dictionary.

BUG=chromium:966514
TEST=Unitest and local HW tests passed.

Change-Id: I1b2a65883e5176fdde49c9858ebe62a097df89cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/1778515
Tested-by: Denis Nikitin <denik@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
14 files changed