Add latest changes from gitlab-org/gitlab@master

.rubocop_todo/fips/sha1.yml

GITLAB_KAS_VERSION

app/views/projects/_export.html.haml

app/views/projects/maintenance/_show.html.haml

doc/administration/backup_restore/backup_archive_process.md

doc/administration/backup_restore/backup_cli.md

doc/administration/backup_restore/backup_gitlab.md

doc/administration/geo/_index.md

...geo/replication/troubleshooting/postgresql_replication.md

doc/administration/geo/setup/database.md

doc/administration/geo/setup/external_database.md

...nistration/geo/setup/two_single_node_external_services.md

doc/administration/geo/setup/two_single_node_sites.md

doc/administration/get_started.md

doc/administration/nfs.md

doc/administration/package_information/supported_os.md

...stration/packages/container_registry_metadata_database.md

doc/administration/postgresql/external_metrics.md

doc/administration/postgresql/external_upgrade.md

doc/administration/postgresql/moving.md