Streamline upstart scripts in os-svc-daemon

Best practice is to use start-stop-daemon rather than sudo, as sudo will
apply user-centric pam limits and create a wtmp entry. Also there is no
need for a script stanza, as we are only execing one command.

Change-Id: I0c2f12536b56d90fd43ab40e74424350efcc0b61
Merge "Streamline upstart scripts in os-svc-daemon"