Have option for RESTARTING a service instead of Starting it (if running)

[kingmatusevich]

I would like this, as it would solve many use cases. In my case, I want to restart a Nginx container that uses let's encrypt updated SSL files. For my use case, I can't use the rancher load balancer to do SSL termination. So restarting the container every day at say midnight would be good enough as certs are updated before they expire, and the restart would cause the certs to be reloaded.