Enforce use of a defined token. Simplifies additional server and agent joining process.

Signed-off-by: Derek Nola <derek.nola@suse.com>

roles/k3s/agent/defaults/main.yml

@@ -1,3 +1,4 @@
 ---
 k3s_server_location: "/var/lib/rancher/k3s"
 systemd_dir: "/etc/systemd/system"
+api_port: 6443

roles/k3s/agent/templates/k3s-agent.service.j2

@@ -7,7 +7,7 @@ After=network-online.target
 Type=notify
 ExecStartPre=-/sbin/modprobe br_netfilter
 ExecStartPre=-/sbin/modprobe overlay
-ExecStart=/usr/local/bin/k3s agent --data-dir {{ k3s_server_location }} --server https://{{ api_endpoint }}:{{ api_port }} --token {{ hostvars[groups['server'][0]]['token'] }} {{ extra_agent_args }}
+ExecStart=/usr/local/bin/k3s agent --data-dir {{ k3s_server_location }} --server https://{{ api_endpoint }}:{{ api_port }} --token {{ token }} {{ extra_agent_args }}
 KillMode=process
 Delegate=yes
 # Having non-zero Limit*s causes performance problems due to accounting overhead