Geo - Calculate repositories checksum on primary node

Merged Douglas Barbosa Alexandre requested to merge da-repository-checksum into master

What does this MR do?

Calculate the checksum for all projects in the database.

Are there points in the code the reviewer needs to double check?

ee/app/workers/geo/repository_verification/*

Why was this MR needed?

Make sure that the repository on the secondary node matches the repository on the primary node.

Does this MR meet the acceptance criteria?

What are the relevant issue numbers?

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/4756

Edited by Douglas Barbosa Alexandre