consume the inigo server output stream

previously the client would lock up sending back the process payloads, and
keep the connection open.

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>
simplify inigo server; don't need NetOut

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>
wait a bit longer for warden to shut down

this involves destroying containers; 5 seconds cuts it a bit close

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>