Add Puppet Agent v6.18.0 (#3533)

manifests/Puppet/puppet-agent/6.18.0.yaml

@@ -0,0 +1,20 @@
+---
+
+Id: Puppet.puppet-agent
+Version: 6.18.0
+Name: Puppet Agent
+Publisher: Puppet, Inc
+License: Apache 2.0
+LicenseUrl: https://github.com/puppetlabs/puppet/blob/main/LICENSE
+AppMoniker: puppet
+Tags: puppet, pe, puppetlabs
+Description: Puppet is a tool that helps you manage and automate the configuration of servers.
+Homepage: https://puppet.com/docs/puppet/6.18/about_agent.html
+Installers:
+  - Arch: x64
+    Url: https://downloads.puppetlabs.com/windows/puppet6/puppet-agent-6.18.0-x64.msi
+    Sha256: 800EC44330BA94632A1CE1ECD78B61A07EEBD99A18FD2AB42FE12C3B4CECD24A
+    InstallerType: msi
+    Switches:
+      Silent: '/qn /norestart'
+Commands: puppet