A client like `pinata diagnose` can do the equivalent of:
nc 192.168.64.2 62374 > foo.tar
and find `foo.tar` contains
- the output of `/usr/bin/diagnostics`
- `iptables -L`
- `netstat -an`
- `ps uax`
- `docker ps`
- `dig docker.com`
- `wget http://docker.com`
This will allow us to diagnose various in-VM faults, without having
to ask the user to access the console and run commands.
Signed-off-by: David Scott <dave.scott@docker.com>
