yumrepo_core: remove puppet version contraint

Author: bastelfreak

.fixtures.yml

@@ -7,9 +7,7 @@ fixtures:
     provision: 'https://github.com/puppetlabs/provision.git'
     puppet_agent: 'https://github.com/puppetlabs/puppetlabs-puppet_agent.git'
     stdlib: "https://github.com/puppetlabs/puppetlabs-stdlib.git"
-    yumrepo_core:
-      repo: "https://github.com/puppetlabs/puppetlabs-yumrepo_core.git"
-      puppet_version: '>= 6.0.0'
+    yumrepo_core: "https://github.com/puppetlabs/puppetlabs-yumrepo_core.git"
   symlinks:
     apache: "#{source_dir}"
     site_apache: "#{source_dir}/spec/fixtures/site_apache"