Add a flag to run containers in privileged mode. Add termination signals and checks for managing a container which doesnt rely on incoming HTTP connections. Make the existence of incoming HTTP connections the default termination check. Switch the termination monitoring from global to container specific using a thread pool.
Switch the metadata from file based to sqlite based to make gantry not process hostile.
Fix a typo in the termination signal class comment.
Fix gantryd to not use the daemon_mode from the RuntimeManager.
Merge remote-tracking branch 'origin/master' into nonwebcontainers
Whitespace, line length, and other linter type fixes.