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

[Cron Daemon]

'sid-strict/master.log' -> 'sid-strict/master.20180601.log'
testing2sid/master.20180531.log: 83.4 KiB / 1117.9 KiB = 0.075
'stretch2buster-rcmd/master.log' -> 'stretch2buster-rcmd/master.20180601.log'
'oldstable222sid/master.log' -> 'oldstable222sid/master.20180601.log'