today boagent can either use scaphandre (json) to get energy consumption of the host, or rely on boaviztAPI's defaults depending on the hardware, for a given time window
we need to be able to ask boagent to get its real power measurements from another source than scaphandre, some examples being :
- ipmi based measurements
- smart pdu
- snmp
how to implement that ? probably a flag to call for different stategies