add. script for executing multiple ssh tunnels.
add. logic spawn tunnels.
add. definitions for SSH Tunnel parameters.
add. log handling class to enable the addition of different log handlers.
mod. Use user_metrics package logger.
mod. Don't rely on conf settings for default args.
Merge pull request #1 from rfaulkner/master

Testing first Pull request to wikimedia fork.  Commits to get the SSH tunneling script running.