wait-for-deps failing on latest master
Summary
Today's latest rails images are causing our wait-for-deps
script to fail. This is because instead of getting the database version when running 'db:version' we are getting:
WARN: Please set prometheus_multiproc_dir to persistent directory path.
Which is an error added upstream here https://gitlab.com/gitlab-org/prometheus-client-mmap/merge_requests/28
and brought into master earlier today here: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30165
prometheus_multiproc_dir
might very well be a good setting for us to support, but regardless we should probably have our db:version check only grab the last line out output.