Emi 3

This pull request contains two work :
* Development of EMI-3 LB & WMS templates.
* Cleaning of the update repository. All update have been deleted, as they was based on EMI-2 rather than EMI-3, and the update 10 has been created. This update is based on the last version of EMI-3 (update 10) and the EPEL repo from the 27th of November.
As you can see on:
https://ccnagboxli01.in2p3.fr/nagios/cgi-bin/status.cgi?navbarsearch=1&host=sbgwms1.in2p3.fr
EMI-3 WMS+LB templates are working fine.