feat: add haproxy2 role (#322)

- add basic haproxy2 role
- add peers and resolvers
- add haproxy2+ metrics frontend

Reviewed-on: https://git.query.consul/unkinben/puppet-prod/pulls/322

site/profiles/manifests/haproxy/peers.pp

@@ -0,0 +1,24 @@
+# profiles::haproxy::peers
+class profiles::haproxy::peers (
+  Boolean $enable = false,
+){
+
+  if $enable {
+
+    $peer_tag = "${facts['country']}-${facts['region']}-${facts['environment']}"
+
+    @@haproxy::peer { "${peer_tag}_${facts['networking']['fqdn']}":
+      peers_name => $facts['networking']['fqdn'],
+      port       => 10000,
+      tag        => $peer_tag,
+    }
+
+    # collect exported resources
+    Haproxy::Peer <<| tag == $peer_tag |>>
+
+    haproxy::peers { $peer_tag:
+      collect_exported => true
+    }
+
+  }
+}