Fixes #5544: Update Rudder logrotate configuration to be in sync between...

... normal and initial promises

Ticket: http://www.rudder-project.org/redmine/issues/5544

To be merged in 2.10
Actually they are, and should have been in the "standard" Techniques :) so I used the initial promises as the reference instead. I suspect a merge to have reintroduced the non-DRY behavior.