Add TTL refresh worker for Live-Trace (for `dependent: :destory` problem)

What does this MR do?

• This MR is for resolving dependent: destory problem
• This MR addes TTL Refresh worker to the Live trace MR.
• For preventing production-data loss(In case, redis store will be expired), TTL will be extended periodically. The extending process keeps happing until the job trace's been archived.
• This MR is to be merged to live-trace-v2 instead of master

There are alternative approaches

• Swap redis chunks to database when jobs finished

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Tests added for this feature/bug
• Review
  • Has been reviewed by Backend
  • Has been reviewed by Database
• End-to-end tests pass (package-and-qa manual pipeline job)

What are the relevant issue numbers?

• https://gitlab.com/gitlab-org/gitlab-ce/issues/44935
• https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18169
• https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18530
• https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18554