Implement auto-update of operator

[mmanciop]

Have the Lumigo controller spawn a cron-job in its own namespace (Owns reference in controller) to nightly check which version of the image in the ECR Repo #4 is the latest and, if a later one is found, update the controller's deployment, triggering a rolling update. Try what happens when a bad image is uploaded, and if we can revert the change then.