Add control of water pumping (Zone 1 & 2)

[yayadrian]

Add control and monitoring for the Water Pumping Zone 1 and 2.

The URL format appears to be this:
http://DEVICE_IP/control?device=pump&state=on&zone=1&time=10

There is an update in /events for pumping status, but it needs more investigation when this is reported.
There may be limitations on what state can be tracked currently.

[yayadrian]

Talking with Harvst, they will add pumping information to the /events stream.
Awaiting beta firmware update.