Allow wildcard service_description in serviceescalation

This adds the feature described @ https://shinken.readthedocs.org/en/latest/07_advanced/objecttricks.html#all-services-on-same-host

and fixes he bug report @ https://github.com/naparuba/shinken/issues/1161

I have been running with this code in production for the last two months without any issues.

I hope this doesn't look too bad, with my limited python skills I couldn't see a more elegant way of doing it.