[Piuparts-reports] Cron <piupartsm at pejacevic> rotate_master_logs

[Cron Daemon]

buster/master.20180908.log: 96.1 KiB / 1056.4 KiB = 0.091
'jessie2stretch/master.log' -> 'jessie2stretch/master.20180909.log'
jessie2bpo/master.20180908.log: 49.2 KiB / 1028.4 KiB = 0.048