Merge branch 'initial_repository_storage_move' into 'master'

app/models/project.rb

app/models/project_repository_storage_move.rb

app/services/projects/update_repository_storage_service.rb

app/workers/project_update_repository_storage_worker.rb

changelogs/unreleased/initial_repository_storage_move.yml

...20200407222647_create_project_repository_storage_moves.rb

...00429015603_add_fk_to_project_repository_storage_moves.rb

db/structure.sql

...services/ee/projects/update_repository_storage_service.rb

...rvices/projects/update_repository_storage_service_spec.rb

spec/factories/project_repository_storage_moves.rb

spec/lib/gitlab/import_export/all_models.yml

spec/models/project_repository_storage_move_spec.rb

spec/models/project_spec.rb

spec/services/projects/fork_service_spec.rb

...rvices/projects/update_repository_storage_service_spec.rb

...ects/update_repository_storage_service_shared_examples.rb

.../workers/project_update_repository_storage_worker_spec.rb