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

[Cron Daemon]

'sid/master.log' -> 'sid/master.20180323.log'
'testing2sid/master.log' -> 'testing2sid/master.20180323.log'
stretch2buster-rcmd/master.20180322.log: 89.7 KiB / 1075.0 KiB = 0.083, 0:01
stretch2bpo/master.20180322.log: 47.6 KiB / 1044.0 KiB = 0.046