EE port: Enable/disable Auto DevOps at Group level

Mayra Cabrerarequested to merge
52447-auto-devops-at-group-level-ee into master

What does this MR do?

EE port for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/25533

What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ce/issues/52447

Edited by 🤖 GitLab Bot 🤖

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