Enable Sidekiq backtracing for workers that delete data

Description

Enable Sidekiq backtracing for workers that delete data

Proposal

For workers that delete data we should enable a full stack trace to be logged, to enable better debugging.

For example, we have seen unhandled exceptions raised in the ProjectDestroyWorker that leave projects in a soft-deleted state. This will ensure that the project name and path is not freed up until the project is deleted fully.

Links / references

Sidekiq Option:

https://github.com/mperham/sidekiq/wiki/Advanced-Options#workers

Relevant issues:

https://gitlab.com/gitlab-org/gitlab-ce/issues/20365 https://gitlab.com/gitlab-org/gitlab-ce/issues/27457