add an inigo test to ensure connections to app stay open as long as the app is running
add an inigo test to ensure connections to app stay open as long as the app is running

[#153336008]

Signed-off-by: Will Pragnell <eefda05bdef438660d447ff971b84a00b7795fad@pivotal.io>

cloudfoundry-incubator/inigo