Fix the unpause_basic test. The console will appear to have failed, given the

Fix the unpause_basic test.  The console will appear to have failed, given the
current Console.py API, because no bytes have come from it, but that's not a
failure -- an unpaused domain has no reason to output any more data.  We need
to send a command to the domain before we can be sure whether it is alive or
dead, so move the FAIL call, allowing the console connection to throw
ConsoleError.

Signed-off-by: Ewan Mellor <ewan@xensource.com>