[v_lisivka]

This change proposal can be tracked here: https://fedoraproject.org/wiki/Changes/DNF_Better_Counting

In short:

Add a new "countme" variable. This variable will: - Start as a "true" value, - Reset to a "false" value the first time the client successfully makes a request to Fedora mirror servers, and - Be reset to a "true" value after seven days.

This way, rather than filtering by unique IP addresses, we can count only the "true" requests, so we count each machine once — but no more than once.