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

[Cron Daemon]

'sid/master.log' -> 'sid/master.20180126.log'
'sid-nodoc/master.log' -> 'sid-nodoc/master.20180126.log'
'testing2sid/master.log' -> 'testing2sid/master.20180126.log'
stretch2buster-rcmd/master.20180125.log: 85.3 KiB / 1035.9 KiB = 0.082