feat: add frontends, backends, listeners

- add a way to define frontends, backends and listeners through hieradata

site/profiles/manifests/haproxy/mappings.pp

@@ -1,9 +1,13 @@
 # profiles::haproxy::mappings
-class profiles::haproxy::mappings (
-  Array $list = []
-) {
-  haproxy::mapfile { 'domains-to-backends':
-    ensure   => 'present',
-    mappings => $list,
+class profiles::haproxy::mappings {
+
+  # for each mapping:
+  $mappings = lookup('profiles::haproxy::mappings')
+  $mappings.each |$mapping, $data| {
+
+    # create mapping
+    haproxy::mapfile { $mapping:
+      * => $data,
+    }
   }
 }