chore: add rados gateway role (#379)

- just enough role to deploy some containers

Reviewed-on: #379

site/roles/manifests/infra/ceph/rgw.pp

@@ -0,0 +1,10 @@
+# a role to deploy the ceph rgw
+class roles::infra::ceph::rgw {
+  if $facts['firstrun'] {
+    include profiles::defaults
+    include profiles::firstrun::init
+  }else{
+    include profiles::defaults
+    include profiles::base
+  }
+}