New test role to create a Yum package repo

test/roles/yum_repo.rb

+name 'yum_repo'
+description 'Configure a local Yum package repository'
+run_list( 
+  'recipe[base]',
+  'role[yum_mirror]'
+)
+default_attributes(
+  directory: {
+    '/var/www/html/repo': { recursive: true }
+  },
+  execute: {
+    # Initialize once when repo is created
+    'createrepo /var/www/html/repo': {
+      creates: '/var/www/html/repo/repodata'
+    },
+    # Update after additional packages have been added
+    'createrepo --update /var/www/html/repo': {
+     action: :nothing
+    }
+  },
+  # Download packages to the repository
+  remote_file: {
+    '/var/www/html/repo/chef-13.1.31-1.el7.x86_64.rpm': {
+      source: 'https://packages.chef.io/files/stable/chef/13.1.31/el/7/chef-13.1.31-1.el7.x86_64.rpm',
+      notifies: [:run, 'execute[createrepo --update /var/www/html/repo]', :delayed]
+    }
+  }
+)