A warning comment

There is a mismatch between 'archive' modules between the modules
provided by modules.env and the dependencies of puppet-grafana.

Change-Id: I783e19243e79147d8d2e76dcd39a747993f0f1fb

modules/openstack_project/manifests/grafana.pp

@@ -52,6 +52,10 @@ class openstack_project::grafana (
 
   class { '::grafana':
     cfg            => $grafana_cfg_merged,
+    # Note that we can't use archive because that install_method requires
+    # the camptocamp-archive module but we have puppetcommunity-archive
+    # in modules.env, and puppet only supports having one in the modulepath
+    # at a time.
     install_method => 'repo',
     version        => '2.1.0',
   }