fix: remove useless package, early command & create default user to a…

…void ubuntu user

packer/cloud-config/user-data.pkrtpl.hcl

@@ -4,28 +4,25 @@ autoinstall:
   refresh-installer:
     update: true
   updates: "all"
-  early-commands:
-    # workaround to stop ssh for packer as it thinks it timed out
-    - sudo systemctl stop ssh
   locale: en_US.UTF-8
   keyboard:
     layout: fr
     variant: latin9
   timezone: Europe/Paris
   packages:
-    - openssh-server
     - qemu-guest-agent
     - cloud-init
-  identity:
-    hostname: ${build_hostname}
-    realname: ${build_fullname}
-    username: ${build_username}
-    password: ${build_password_encrypted}
   ssh:
     install-server: yes
-    authorized-keys:
-      - ${build_authorized_key}
+    authorized-keys: []
     allow-pw: no
   storage:
     layout:
-      name: direct
+      name: direct
+  user-data:
+    default_user:
+      name: ${build_username}
+      gecos:  ${build_fullname}
+      hashed_passwd: ${build_password_encrypted}
+      ssh_authorized_keys:
+        - ${build_authorized_key}