Move gitlab shell configs into gitaly's config.toml

Summary

Gitlab shell configs are getting migrated from the config.yml under the ruby/gitlab-shell directory, to gitaly's config.toml. Here is the MR that does that: gitlab-org/gitaly!2066 (merged)

We need a change that moves gitlab shell configuration values that are relevant to gitaly hooks, to gitaly's config.toml.

related omnibus issue: gitlab-org/gitaly#2674 (closed)

Current behavior

GitLab Shell settings within Gitaly are populated via config.yml

Expected behavior

GitLab Shell settings within Gitaly are populated via Gitaly's config.toml

Versions

• Chart: master