Shutdown / Restart mechanism

[problame]

Use panic(restart_object) to signal the desire to shut down MAMID inplace (i.e. close all DB connections, stop Monitoring & Deployment, ...) and then start again.

One could imagine functions as attributes on the restart_object that should be run while the other services...

[problame]

Would require a new Mongod state in MSP: ForceNotRunning = {shutdown: 1, force:true}