Geo: add restart to secondary site during initial build

Recently a restart has become required after adding a secondary site to the primary on GitLab rails. This is a documented step that is missing from GET. The restart has been in the docs for some time and has only recently become an issue in GET. This MR adds the restart to the GET process, I've also raised #543 (closed) to ensure GET is following the documented process as this step should have always been here.

I'm also trying to find out why this restart is suddenly causing issues. For now, adding this restart as documented will allow our pipelines to pass.