hardening/232_jetty_startup

Implements issue https://github.com/telefonicaid/fiware-connectors/issues/232
As far as I understand the startup script name changes. However, the init.d script hasn't been changed (see https://github.com/telefonicaid/fiware-connectors/blob/master/flume/neore/rpm/SOURCES/init.d/cygnus#L32):

```
FLUME_EXECUTABLE=${CYGNUS_DIR}/bin/flume-ng
```

In understand that init.d script should be adjusted.