Mark deployment/ as deprecated

README.md

@@ -119,7 +119,8 @@ Most of the directories in this repository have their own README going into more
 details as to what they are for. As an overview:
 
 - [`deployment/`](./deployment) contains bits and pieces having to do with
-  auto-deployment of test VMs on a private Proxmox.
+  auto-deployment of test VMs on a private Proxmox. This directory is
+  deprecated, the information it contains outdate. Refer to `infra/` instead.
 
 - [`infra/`](./infra) contains the configurations for the various VMs that are
   in production for the project, for instance the Git instances or the Wiki.

deployment/README.md

@@ -1,5 +1,9 @@
 # Provisioning VMs via Proxmox
 
+NOTE: This directory is outdated and most of the interesting code has moved to
+`infra/`. There is still some information to extract from here, but treat all
+that you read with a grain of salt.
+
 ## Quick links
 
 Proxmox API doc