benchmark machine
* Add ExecutionLimits to sc-sysinfo and return float Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Increase benchmarking duration and add options Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Fix tests Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> * Fix tests Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>