feat: add resolver/authoritive dns roles

- roles are currently empty, this just exists so I can branch off it
  and start building test servers with this role

site/roles/manifests/infra/dns/authoritive.pp

@@ -0,0 +1,7 @@
+# roles::infra::dns::authoritive
+# defines a dns server with master-only zones
+#
+class roles::infra::dns::authoritive {
+    include profiles::defaults
+    include profiles::base
+}

site/roles/manifests/infra/dns/resolver.pp

@@ -0,0 +1,7 @@
+# roles::infra::dns::resolver
+# defines a dns server with forward-only zones
+#
+class roles::infra::dns::resolver {
+    include profiles::defaults
+    include profiles::base
+}