many undeleted files in /tmp

[aceforeverd]

Bug Description

generally, if a test fails, cleanup may not executed in the test end. like https://github.com/4paradigm/openmldb/blob/8142820cc51bcd01a276bb8b40b2d241dd624419/src/nameserver/name_server_test.cc#L579

files in /tmp got cleanup by strategy, however, they may produce many useless files in a short time

Expected Behavior

Steps to Reproduce

[aceforeverd]

As far as I experienced, those undeleted files may fails aggregator_test

[aceforeverd]

a corrupted system :(

[aceforeverd]

There is no fix to this yet.

[aceforeverd]

although left something in /tmp undeleted still, #3829 manage to handle bunch of temporary directories