Release 6.1.0

What's Changed

• don't depend on theforeman/stories by @evgeni in #359
• Add Packit by @stejskalleos in #361
• Deal no selected environment in host form by @ekohl in #358
• Fixes #351 - Update readme by @nadjaheitmann in #362
• Fix #357 - Undefined method 'environment' for config groups by @stejskalleos in #366
• Fixes #360 - Fix puppetclass keyword search by @nadjaheitmann in #364

Full Changelog: v6.0.0...v6.1.0