Fix RKE2 MetalLB L2Advertisement to honor custom lb_pool_name (#135)

The apply-manifests role rendered the IPAddressPool from a template using
lb_pool_name, but applied the L2Advertisement from a hardcoded remote file
where the pool name was baked in as 'first-pool'. Setting lb_pool_name to
anything else left the L2Advertisement pointing at a non-existent pool, so
MetalLB assigned LoadBalancer IPs but never advertised them (services got an
external IP but were unreachable).

Template the L2Advertisement locally from lb_pool_name, mirroring the
IPAddressPool pattern, so both manifests always reference the same pool.

Ansible/Playbooks/RKE2/roles/apply-manifests/tasks/main.yaml

@@ -33,10 +33,20 @@
   become_user: "{{ ansible_user }}"
   when: inventory_hostname == groups['servers'][0]
 
+# Deploy L2 Advertisement to Server 1 (templated so it matches lb_pool_name)
+- name: Copy metallb L2 Advertisement to server 1
+  ansible.builtin.template:
+    src: templates/metallb-l2advertisement.j2
+    dest: /home/{{ ansible_user }}/l2advertisement.yaml
+    owner: "{{ ansible_user }}"
+    group: "{{ ansible_user }}"
+    mode: '0755'
+  when: inventory_hostname == groups['servers'][0]
+
 # Apply L2 Advertisement for metallb
 - name: Apply metallb L2 Advertisement
   ansible.builtin.command:
-    cmd: kubectl apply -f https://raw.githubusercontent.com/JamesTurland/JimsGarage/main/Kubernetes/RKE2/l2Advertisement.yaml
+    cmd: kubectl apply -f /home/{{ ansible_user }}/l2advertisement.yaml
   become_user: "{{ ansible_user }}"
   changed_when: true
   when: inventory_hostname == groups['servers'][0]

Ansible/Playbooks/RKE2/roles/apply-manifests/templates/metallb-l2advertisement.j2

@@ -0,0 +1,8 @@
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: example
+  namespace: metallb-system
+spec:
+  ipAddressPools:
+  - {{ lb_pool_name }}