Don't use colours if we're not a tty

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>
Use a xenserver vagrantfile

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>
Default value for 'destination' has changed

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>