chore: migrate puppet-r10k

- moved puppet-r10k the unkin organisation
- ensure branch is set to follow origin/master

site/profiles/manifests/puppet/r10k.pp

@@ -22,6 +22,7 @@ class profiles::puppet::r10k (
     mode    => '0755',
     content => "#!/bin/bash\n(
       cd /etc/puppetlabs/r10k
+      git branch --set-upstream-to=origin/master master
       git reset --hard master
       git clean -fd
       git pull\n)",