Cleanup fixtures

Author: TheMeier

.fixtures.yml

@@ -1,8 +1,7 @@
+---
 fixtures:
   repositories:
-    stdlib: "https://github.com/puppetlabs/puppetlabs-stdlib.git"
-    apt: "https://github.com/puppetlabs/puppetlabs-apt.git"
-    docker: "https://github.com/puppetlabs/puppetlabs-docker.git"
-    yumrepo_core:
-      repo: https://github.com/puppetlabs/puppetlabs-yumrepo_core.git
-      puppet_version: ">= 6.0.0"
+    apt: https://github.com/puppetlabs/puppetlabs-apt.git
+    docker: https://github.com/puppetlabs/puppetlabs-docker.git
+    stdlib: https://github.com/puppetlabs/puppetlabs-stdlib.git
+    yumrepo_core: https://github.com/puppetlabs/puppetlabs-yumrepo_core.git