Add run and rinstall scripts.

'run' lets you run an arbitrary shell commad on a bunch of configured bruno
devices.  'rinstall' uses the run command to install a new software version
on a bunch of brunos in parallel, if they aren't already running it, and
carefully returns success or failure depending if they all got upgraded

Example (upgrade all the configured TV boxes to koala-3):
	./rinstall /path/to/ $(./config is_tv)

For examples of the run command, read the rinstall script.

Change-Id: I7d0ba4df9525bdc7d8d19f6be378c8307f68b067
4 files changed