Fixes #23857 - Fix Performance/InefficientHashSearch cop

Fixes #7451 - Review whitespace in extracted strings

Fixes #19772, #19773, #19774 - Fix some empty line cops

Fixes #19700 - update rubocop rules

The following changes have been made:

- Performance/RedundantMerge:
changes lines such as:
```not_found_message.merge! :message => options```
to:
```not_found_message[:message] = options```

- converts str.match() to str =~ ()...

Refs #15779 - make background processing unavailable for now (#4217)

The original PR got vetted in the packaging phase and including
foreman-task as dependency of Foreman was refused. We need to rethink
our approach for getting the foreman-tasks functionality available...

Fixes #6502 - List ignored classes and environments on import

When importing environments and classes from puppet, ignored
environments and classes defined in ignored_environments.yml
aren't aparent.

This will add them to the list to import as ignored and...

Fixes #15779 - make background processing available

Refs #3809 - Using defaults for AndOr cop

fixes #15720 - rename *_filter to *_action

The older 'filter' name is changing in Rails to 'action' and is being
deprecated.

Refs #3809 - Turning on some rubocop cops

Fixes #10713 - improved backtrace logging

• full trace in 500 page in production shows really the full trace
• Foreman::Logging.exception as an unified entry point for exceptions logging
• the backtrace cleaner doesn't delete the plugins
• the orchestration exceptions gets the backtrace covered by logger...

Fixes #10715 - api build_pxe_default returns non-JSON message

The fix adds a new method `render_message` for responding with a status
text.

Refs #3809 - Remove cops for empty lines

Fixes #8838 - Replace HTTP error codes with human-readable symbols

Refs #3809 - Remove useless assignments

Refs #3809 - Remove rubocop TODOs

Removed the following TODOs so that cops for these will run from now on:

Lint/AmbiguousOperator, DefEndAlignment, DeprecatedClassMethods
EnsureReturn, RequireParentheses, Void, BlockAlignment, EndAlignment,
UselessAccessModifier,...

fixes #6856 - API v2 - more efficient import puppetclasses for single environment

fixes #4386 - gem friendly_id to simplify find by id, name, label, etc

Fixes #6929 - Rephrase description string for api import_puppetclasses

Refs #4478 - API doc strings marked for translation

Fixes #4851: a SmartProxy.with_features scope replaces feature-specific scopes generated during class loading

fixes #812 - new permissions model, user group role and nest support, role filters for better granularity

• Daniel Lobato <elobatocs@gmail.com>
• Joseph Magen <jmagen@redhat.com>
• Tom McKay <thomasmckay@redhat.com>
• Greg Sutcliffe <gsutclif@redhat.com>...

fixes #3553 - add "except" option to prevent puppet class import to select types of import

fixes #3515 - API handles not found objects with 404

fixes #3577 - do not treat `params[:dryrun]` with value `false` as true

fixes #3550 - correct HTTP method for puppet class import API

fixes #3538 - workaround for broken #pluck on lower Rails versions

fixes #3140 continue - apipie params fix

fixes #3140 - API to allow importing of puppet classes