[Fuego] pdudaemon support for Fuego

[Daniel Sangorrin]

Hello Tim,

One of the results from the Automated Testing Summit in Scotland was
an agreement on using pdudaemon to control PDUs (Power Distribution Units).

This patch adds such support:
[PATCH] ftc: add a new command to interact with pdudaemon

This is a very short quickstart:

- Prepare pdudaemon (for an ip9258 PDU in this example)

host$ git clone https://github.com/pdudaemon/pdudaemon
[Note] I have made a few changes and sent a pull request, so temporarily you may want to use https://github.com/sangorrin/pdudaemon
host$ cd pdudaemon
host$ vi share/pdudaemon.conf
{
	"daemon": {
		"hostname": "0.0.0.0",
		"port": 16421,
		"dbname": "pdudaemon",
		"logging_level": "DEBUG",
		"listener": "http"
	},
	"pdus": {
		"192.168.11.68": {
			"driver": "ip9258"
		}
	}
}
host$ sudo docker build -t pdudaemon --build-arg HTTP_PROXY=$http_proxy -f Dockerfile.dockerhub .
host$ docker run --rm -it -e http_proxy=$http_proxy -e https_proxy=$https_proxy -e NO_PROXY="$no_proxy" --net="host" pdudaemon:latest

- Check that it works manually

$ curl "http://localhost:16421/power/control/on?hostname=192.168.11.68&port=1"
$ curl "http://localhost:16421/power/control/on?hostname=192.168.11.68&port=1"

- Check that it works from Fuego

$ vi myboard.board
	PDU_HOSTNAME="192.168.11.68"
	PDU_PORT="3"
$ ftc pdu -b myboard.board --command on
$ ftc pdu -b myboard.board --command off

If you have any question about pdudaemon please let me know.

[Note] Please feel free to add this to the wiki.

Thanks,
Daniel