Disable git archive caching
Brought up as one of the things we can do to reduce one of the shared storage requirements. Mentioned here: gitlab-com/migration#63 (closed)
The option was added to GitLab here: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/16325
And we would want to set the env variable WORKHORSE_ARCHIVE_CACHE_DISABLED
for unicorn