Fixes #19789 - fix Layout/SpaceAroundOperators cop
Refs #22164 - use cheaper FactoryBot methods
in- test/unit/*- test/models/shared/taxonomies_base_test.rb- test/controllers/hosts_controller_test.rb
Fixes #21424 - use factory_bot_rails
fixes #16557 - move tests into modern Rails layout
Models, controllers, mailers and helpers are now in test/ subdirsmatching app/ subdirs. Service, miscellaneous and old test/lib/ testsare now in test/unit/ separated from models, which obsoletes the custom...