Fixes #19789 - fix Layout/SpaceAroundOperators cop

Fixes #19894 - Fix Style/RedundantParentheses cop

Fixes #23066 - Port robottelo tests for users and user roles

Fixes #21098 - Use positional args in functional test requests

Fixes #21353 - users can edit login if they have permissions

Fixes #21424 - use factory_bot_rails

Fixes #16884 - enforce granular filters even during save

Fixes #19612 - CVE-2017-7505 don't expose admin to taxed users

fixes #19131 - upgrade minitest to latest 5.x

- override minitest's `_` expectation method with the gettext method
- rename `location` let helper, conflicted with a minitest method name
- fix `assert_equal nil, [..]` deprecation warnings, prefer `assert nil`...

Fixes #16982 - Scope properly when no taxonomies are set

The default scope for hosts and other objects did not restrict
properly by taxonomies. An user without organizations or
locations, could do anything it's permissions allow to.
The list of hosts was unrestricted and showed hosts in...

Fixes #16548 - Changing user own passwd require current passwd

fixes #16557 - move tests into modern Rails layout

Models, controllers, mailers and helpers are now in test/ subdirs
matching app/ subdirs. Service, miscellaneous and old test/lib/ tests
are now in test/unit/ separated from models, which obsoletes the custom...