Ensure container proc output goes to GinkgoWriter
Ensure container proc output goes to GinkgoWriter

[#147152021]

Signed-off-by: Will Martin <9c35c700d580163e024ea0f314140dbb6ef9e1ac@pivotal.io>

cloudfoundry-incubator/guardian,cloudfoundry-incubator/guardian,cloudfoundry-incubator/guardian