Load Monitoring API

[Orbiter]

We need an servlet which provides information about the load of the grid services which can be used to trigger more services or to shut down existing.

[nikhilrayaprolu]

@Orbiter @mariobehling I see that yacy_search_server has something similar in administration where we could monitor RAM/DISK usage http://yacy.searchlab.eu/Status.html so do you want a similar administrative interface? If so I plan to go through https://github.com/yacy/yacy_search_server and check how those features are implemented and implement a servlet that provides this information.