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1) Switch bmc protocol between ipmi and redfish for hwmon. 2) Get power status provided by mtc through below file /var/run/bmc/<hostname> Story: 2005861 Task: 35815 Change-Id: Ie577f7f9265b7cdb5c985dcc0861a90e74508026 Signed-off-by: zhipengl <zhipengs.liu@intel.com>