token: explain how to generate it (#328)

Signed-off-by: Frank Villaro-Dixon <[email protected]>

inventory-sample.yml

@@ -14,7 +14,12 @@ k3s_cluster:
     ansible_port: 22
     ansible_user: debian
     k3s_version: v1.26.9+k3s1
-    token: "mytoken"  # Use ansible vault if you want to keep it secret
+    # The token should be a random string of reasonable length. You can generate
+    # one with the following commands:
+    # - openssl rand -base64 64
+    # - pwgen -s 64 1
+    # You can use ansible-vault to encrypt this value / keep it secret.
+    token: "changeme!"
     api_endpoint: "{{ hostvars[groups['server'][0]]['ansible_host'] | default(groups['server'][0]) }}"
     extra_server_args: ""
     extra_agent_args: ""