Add Get System Restart Cause command

This change overrides the Get System Restart Cause command to
use the RestartCause DBus property.

Tested:
ipmitool chassis restart_cause
System restart cause: power-up due to restore-previous power policy
ipmitool power cycle
Chassis Power Control: Cycle
ipmitool chassis restart_cause
System restart cause: chassis power control command

Change-Id: I2023f958bdc4d8abf18c25b701709cbd83c0b9b0
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
1 file changed