Fixes #19789 - fix Layout/SpaceAroundOperators cop

Fixes #21098 - Use positional args in functional test requests

Fixes #15402 - Moved puppet to separate api controller

fixes #18695 - create test/functional/ for test:functionals task

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.

Fixes #16167 - added list of safemode methods

fixes #16578 - make keep_param idempotent, remove duplicate call

Using host_params (and keep_param) twice was causing compute_attributes
to be deleted permanently out of `params`. keep_param now restores
elements it deletes, and the controller now only calls host_params once...

Fixes #16530 - Redirect login page back if active session

Fixes #10395 - fine grain for CPU selectors