temporary clean_expired_sessions mock

Signed-off-by: Jose Borreguero <borreguero@gmail.com>
3 jobs for expiredsessions in 5 minutes and 43 seconds (queued for 2 seconds)
Name Stage Failure
test Test
Total reclaimed space: 1.54GB
$ sudo chown -R gitlab-runner .
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=amd64 os=linux pid=3499715 revision=ece86343 version=13.5.0
WARNING: artifacts/coverage.xml: no matching files
ERROR: No files to upload
Cleaning up file based variables
ERROR: Job failed: exit status 1