Pass redis config to workhorse

Workhorse has (optional) redis integration now. We should configure it to catch problems early.

assigned to @grzesiek

mentioned in issue gitlab-workhorse#118 (closed)

enabled an automatic merge when the pipeline for 6861f49a07c05bf55ebe22c57db49e22238a4f9b succeeds

@jacobvosmaer-gitlab Looks good to me! MWPS set

mentioned in merge request !269 (merged)

@jacobvosmaer-gitlab Pipeline failed because of 502. This is probably not a legitimate failure, so I opened https://gitlab.com/gitlab-org/gitlab-development-kit/merge_requests/269. Can we merge it and rebase this merge on top of that?

!269 (merged) is set to MWPS

added 9 commits

• 6861f49a...e208d257 - 8 commits from branch master
• 3d1d568c - Pass redis config to workhorse

Compare with previous version

@jacobvosmaer-gitlab I rebased on top of master.

enabled an automatic merge when the pipeline for 3d1d568c succeeds

merged

mentioned in commit 86527311