apphandler: move set acpi power state to new api.
apphandler: move set acpi power state to new api.

Rewrite "set acpi power state" command to use the newly
introduced ipmi provider API.

Tested:
verified ipmitool set/get acpi power state status is same both
before and after the changes

Command : ipmitool raw 0x06 0x07 // get acpi
Response: 05 03

Command: ipmitool raw 0x06 0x06 0x87 0x82 //set acpi
Response:

Command: ipmitool raw 0x06 0x07 // get acpi
Response:  07 02

Command:  ipmitool raw 0x06 0x06 0x88 0x83 // set acpi
Response:

Command:  ipmitool raw 0x06 0x07 // get acpi
Response: 08 03

Signed-off-by: Deepak Kumar Sahu <e05c2a0e02e23b0bcaef167cbf6d799823ef2f1b@intel.com>
Change-Id: I7dc6edf3d3fd3d0caa98d1b1604e09c6d06675b4

openbmc/phosphor-host-ipmid,openbmc/phosphor-host-ipmid,openbmc/phosphor-host-ipmid