chore: document k3s worker configuation

provision/ansible/inventory/group_vars/worker/k3s.yml

@@ -9,5 +9,7 @@ k3s_control_node: false
 k3s_agent:
   node-ip: "{{ ansible_host }}"
   kubelet-arg:
+    # Enables the kubelet to gracefully evict pods during a node shutdown
     - "feature-gates=GracefulNodeShutdown=true"
+    # Allow k8s services to contain TCP and UDP on the same port
     - "feature-gates=MixedProtocolLBService=true"