Automatic shutdown of nodes when not in use / Adjustment timer & Hard shutdown with PoE

[flqvio]

It would be handy to have a configurable way of switching off nodes when not in use (if they are "released" / with their default image).

This is already partly implemented (if cards are released for 2 hours, they shut down).
But it would be interesting to be able to modify the timer to adjust.

It would also be useful to use SNMP if the test nodes are equipped with PoE.
With PoE & SNMP: Hard node shutdown with PoE MIB.

[eduble]

OK. Yes, the current powersave feature has a fixed timer of two hours.
And it is already using PoE to poweroff the nodes, so the remaining work would be to let the user configure the delay.
I will let you know when I have time to work on this.