feat: change to use local mirror

- change almalinux and epel *.repo files on nodes to use local package mirror
- add option to purge yumrepo resources, default to true
- add versionlocking to yum, enable it for puppet-agent

site/profiles/manifests/puppet/client.pp

@@ -29,6 +29,20 @@ class profiles::puppet::client (
     ensure => $puppet_version,
   }
 
+  # if puppet-version is anything other than latest, set a versionlock
+  $puppet_versionlock_ensure = $puppet_version ? {
+    'latest' => 'absent',
+    default  => 'present',
+  }
+  $puppet_versionlock_version = $puppet_version ? {
+    'latest' => undef,
+    default  => $puppet_version,
+  }
+  yum::versionlock{'puppet-agent':
+    ensure  => $puppet_versionlock_ensure,
+    version => $puppet_versionlock_version,
+  }
+
   # Ensure the puppet service is running
   service { 'puppet':
     ensure     => 'running',