Enhancement - Purge old RRD files

[julienmathis]

Come from https://github.com/centreon/centreon/issues/4715

Centreon Web version: 2.7.6 Centreon Engine version: 1.5.1 Centreon Broker version: 2.11.3

Hello,

Can you add a purge of old RRD files?

If I delete services, I can see their RRD files in /var/lib/centreon/metrcis/ and /var/lib/centreon/status/

for example, you can delete RRD older than retention parameter.

regards