Merge pull request #710 from bastelfreak/puppet7

allow all newer puppet gems

Author: bastelfreak

config_defaults.yml

@@ -10,7 +10,7 @@
 Jenkinsfile:
   delete: true
 Gemfile:
-  puppet_version: '~> 6.0'
+  puppet_version: '>= 6.0'
   required:
     ':test':
       - gem: voxpupuli-test