Merge pull request #11234 from hashicorp/docs-csi-demo

docs: note demos/csi is unsupported

demo/csi/README.md

@@ -3,12 +3,17 @@
 This directory contains examples of registering CSI plugin jobs and volumes
 for those plugins.
 
+Contributions are welcome but demos are *not supported* by the core Nomad
+development team. Please tag demo authors when filing issues about CSI demos.
+
 ### Contributing
 
 If you'd like to contribute an example, open a PR with a folder for the plugin
 in this directory. This folder should include:
 
 * A `README.md` with any added instructions a user might need to use the
   plugin. Please include a link to the CSI plugin's source repository.
+  * Add an `Author: @<Github Username>` field at the top so you can be tagged
+    on issues.
 * A Nomad job file for the plugin.
 * A [volume specification](https://www.nomadproject.io/docs/commands/volume/register#volume-specification) file.

demo/csi/hostpath/README.md

@@ -1,5 +1,7 @@
 # Hostpath CSI Plugin
 
+Author: @hashicorp/nomad-eng
+
 This directory includes a demo using the [CSI host path
 driver](https://github.com/kubernetes-csi/csi-driver-host-path) to create
 local "host path" volumes that can be mounted via the Nomad CSI