Drop weeklies older than 90 days - T7778

Drop all weekly images older than 90 days, i.e. 3 months

In my tests, the following results are seen:

root@aura:/usr/local/bin# ls /srv/images/public/weekly/v2021/
20201216.0119  20210303.0128  20210602.0116  20210901.0115  20211201.0215  20220302.1238  20220601.0215  20220622.0216  20220713.0215  20220803.0215  20220824.0219
20210103.0123  20210407.0115  20210707.0115  20211006.0115  20220102.0116  20220406.0217  20220608.0219  20220629.0215  20220720.0217  20220810.0216  20220831.0215
20210203.0144  20210512.0115  20210804.1035  20211110.0115  20220202.0116  20220504.0216  20220615.0215  20220706.0218  20220727.0215  20220817.0217

root@aura:/usr/local/bin# ./rotate-images-new.py v2021 | sort
rmdir: /srv/images/public/weekly/v2021/20201216.0119
rmdir: /srv/images/public/weekly/v2021/20210103.0123
rmdir: /srv/images/public/weekly/v2021/20210203.0144
rmdir: /srv/images/public/weekly/v2021/20210303.0128
rmdir: /srv/images/public/weekly/v2021/20210407.0115
rmdir: /srv/images/public/weekly/v2021/20210512.0115
rmdir: /srv/images/public/weekly/v2021/20210602.0116
rmdir: /srv/images/public/weekly/v2021/20210707.0115
rmdir: /srv/images/public/weekly/v2021/20210804.1035
rmdir: /srv/images/public/weekly/v2021/20210901.0115
rmdir: /srv/images/public/weekly/v2021/20211006.0115
rmdir: /srv/images/public/weekly/v2021/20211110.0115
rmdir: /srv/images/public/weekly/v2021/20211201.0215
rmdir: /srv/images/public/weekly/v2021/20220102.0116
rmdir: /srv/images/public/weekly/v2021/20220202.0116
rmdir: /srv/images/public/weekly/v2021/20220302.1238
rmdir: /srv/images/public/weekly/v2021/20220406.0217
rmdir: /srv/images/public/weekly/v2021/20220504.0216
rmdir: /srv/images/public/weekly/v2021/20220601.0215

Signed-off-by: Ritesh Raj Sarraf ritesh.sarraf@collabora.com