audit rules placement

Hello, I have a rpm/deb package which includes audisp plugin. In order plugin to work, I need to permanently add audit rules. It seems that for Centos/RHEL 7 I need to put those into /etc/audit/rules.d/audit.rules and for Centos/RHEL6 (and probably Debian / Ubuntu?) it is /etc/audit/audit.rules. I noticed however that at least on Centos 7 I could put my rules into /etc/audit/rules.d/plugin.rules and they will be picked on auditd restart and added to /etc/audit/audit.rules. This does not work on Debian 8 - even though it has ruled.d directory only rules from /rules.d/audit.rules are used. Is there some kind of "official" guidance to where I should put my rules on Centos/RHEL/Debian/Ubuntu ? -Lev