chore: use git.unkin.net

update the source to use the endpoint via haproxy with letsencrypt
certificates. this will make it simpler to manage trust in externally
sources containers used for puppet/k8s integration

- use git.unkin.net url for unkin origin

r10k.yaml

@@ -6,5 +6,5 @@
   # This will clone the git repository and instantiate an environment per
   # branch in /etc/puppetlabs/code/environments
   :unkin:
-    remote: 'https://git.service.au-syd1.consul/unkinben/puppet-prod.git'
+    remote: 'https://git.unkin.net/unkin/puppet-prod.git'
     basedir: '/etc/puppetlabs/code/environments'