Conversation RepositoryService::RestoreCustomHooks

Support for creating and retrieving custom hooks through gitaly.

For use in backup / restore (, as well as project export / import.)

For import/export this feature is missing regardless of gitaly. Edit (Jacob): out of scope

For backup/restore, the current task attempts to preserve the custom hooks located on same filesystem as the BackupRestore is run, so does not work when gitaly is on seperate nodes.

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Stages:

• RPC Design: #1205 (closed)

• ~"Client Implementation": Create Issue

• Server Implementation: #1211 (closed)

• ~"Acceptance Testing": Create Issue

RPC Endpoints:

• RepositoryService::RestoreCustomHooks

Known Client Routes:

• rake gitlab:backup:restore
• rake gitlab:backup:create
• Gitlab::ImportExport::Importer
• Projects::ImportExport::ExportService

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