He Yin Ling b4fe43912f ci: adjust expire time for CI artifacts:
set shorter time to save some space on server. For those artifacts need
to be stored for long time, we can manually press "keep" button in job page.

Also add a CI job to check if all artifacts have set expire time.
2018-09-29 03:54:14 +00:00
..
2018-07-20 10:41:11 +05:30
2016-11-03 18:41:00 +08:00