Fixes #19789 - fix Layout/SpaceAroundOperators cop

Fixes #21098 - Use positional args in functional test requests

Fixes #15402 - Moved puppet to separate api controller

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...

Fixes #16633 - AuthSourceLDAP uses *_authenticators filters

Prior to this, non-admin users who were granted *_authenticators
permissions were not able to use them, as the controllers were looking
for *_auth_source_ldaps permissions instead.

refs #15846 - hide API deprecation warnings in tests

Fixes #16219 - Interfaces API works with scoped view_hosts

Before this commit, parent_scope called 'merge' on a scope that may
contain conditions that do not make sense on 'resource_class'.

In this case, when a user with a filter :view_hosts and search
'hostgroup_fullname = foo' tried to view...

Fixes #16397 - set nested template_combo. objects to optional

Fixes #16461 - expose override in filter API

Fixes #15846 - Renamed use_puppet_default to omit in LookupValue