Provide 3 new snmp_driver values for different APC product families:
- apc_masterswitch
- apc_masterswitchplus
- apc_rackpdu
The "apc" snmp_driver is still supported and maps to the MasterSwitch driver
to avoid breaking backwards compatibility.
Different APC product families support different OIDs for power control.
- APC MasterSwitch uses sPDUOutletCtl
- APC MasterSwitchPlus uses sPDUOutletControlMSPOutletCommand
- APC Rack PDU uses rPDUOutletControlOutletCommand
Change-Id: I9d8724543d7da7b1c9cdc180c3396d131ed52615
Closes-Bug: #1471025