Foreman Maintain

Refs #25291 - remove dead code

Fixes #25291 - don't add quit action on fail_slow run_strategy

Fixes #25853 - Improved suggestion to whitelist steps

Fixes #29699 - Fix exit code for warning to 78

Along with the fix, added new section for special exit codes in readme file.

Fixes #28281 - no spinner on non-tty output

Refs #28097 - Disable --assumeyes

Refs #28097 - updated formatting of the message

Fixes #26236 - made disk check silent in sat_versions > 6.2

Fixes #24792 - --brief and --failing options in service status

Two new options were added to service status:
--brief (-b) prints only service name and status for quick overview
--failing (-f) lists only services that are not running
Forthermore there was added Sentence at the end of the status which...

Fixes #23498 - run with mongo 3.4 from scl

To get version of the db server (may be remote) we assume the
'mongo' command is always available. If there is only mongo from SCL
present the mongo client has to be called from within a scl.

With current state of things it is safe to assume there is at least...

Fixes #22456 - Backup command

Fixes #22082 - new conventions & warnings for rubocop 0.52.0

Fixes #21721 - Don't downcase stdin if its hammer credentials

Removed .downcase call from ask() method. downcase of answer is only
performed in filter_decision method now.

Fixes #20848 - Fix error messages indentation

Merge remote-tracking branch 'origin/master' into upgrade-workflow

Add commands for executing procedures

Update from review

Support for run_once procedures and repositories setup

Extract control flow of upgrades to special file

Add --whitelist option

Allows to mark some steps to be ignored in the results: allows to
continue even when some checks are failing.

Full upgrade scenario

This commit intoroduces more structured upgrade scenario consisting of
this scenarios:

• pre_upgrade_check - non-modifying checks: is the system ready?
• pre_migrations - modifying procedures before source update
• migrations - source update and main migrations...

Assumeyes option

Improve reporting on hammer setup and preparation steps

Hammer setup preparation step

Support running commands interactively

RFE #23 - Add new status [WARNING] - Check: is system self registered

Decouple more reporter from runner

Before this commit, we required the reporter to call back runner
methods, which complicated the things. Also the multiple-steps select
was not working properly.

After this change, the reporter just returns a decision as result of...

Check count of paused tasks and offer next steps

Fixes #3 - Add option to skip the prompted step

Done changes for rubocop v0.48.1

Make the spinner opt-in, not opt-out

The default spinner caused issues when one needs to interact with the
user (printing additional messages). As it's needed only for long
running actions, it should not be enforced by default.

Refactor the choice of next steps

Tests for runner and reporter