This reverts commit ccf40a462a4805c7162bc34434cfe718cd96c448.
The previous version would not work properly when daemonized
because there was no stdout. This version maintains stdout and
uses select/poll with non-blocking stdout to capture the output
to a log file.
Depends-On: https://review.openstack.org/634266
Change-Id: I7f0617b91e071294fe6051d14475ead1d7df56b7
890ea4975e