Add prepend_mod to GitlabServicePingWorker
What does this MR do and why?
relates to: https://jihulab.com/gitlab-cn/gitlab/-/issues/1492
JiHu side need to run servie_ping background, so we need to override GitlabServicePingWorker
Edited by Yongbo li
relates to: https://jihulab.com/gitlab-cn/gitlab/-/issues/1492
JiHu side need to run servie_ping background, so we need to override GitlabServicePingWorker