[GAPRINDASHVILI] Scheduling catalog items

[bdunne]

Resolved many conflicts backporting #17594

[miq-bot]

Checked commits bdunne/manageiq@e9bd96e~...1597bf8 with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
3 files checked, 2 offenses detected

app/models/service_template.rb

• ❗ - Line 402, Col 41 - Style/SafeNavigation - Use safe navigation (&.) instead of checking if an object exists before calling the method.
• ❗ - Line 428, Col 34 - Rails/Present - Use if errors.present? instead of unless errors.blank?.