Added SLES11 SP3 Init Script

SUSE Enterprise Server uses still the old init.d and the "daemon" function isn't avaible. There for is "startproc" to start processes as daemons. The "lockfile"-mechanism isn't necessary since rh_status manages that there aren't multple instance of ES.

Tested on Suse Enterprise Server 11 ServicePack 3
The delay of 20 seconds is very important for Elasticsearch.
I see that the SLES killproc accepts -t as a delay option. could you implement that?