New method addDestinationsDefinedByHostsOnFacility

- Add new method addDestinationsDefinedByHostsOnFacility to ServiceManager in Core
- Add this method also to ServiceManagerMethod in RPC
- Add test for this method
Merge pull request #92 from stavamichal/AddDestinationsDefinedByHostsOnFacility

New method addDestinationsDefinedByHostsOnFacility