fix: pre-pull kube-vip images before waiting for VIP

The primary control plane was stalling because kubelet still had to pull both
the Rancher pause image and the kube-vip image before the DaemonSet pod could
become Ready. Pre-pull those images into containerd, extend the readiness wait,
and emit pod diagnostics if kube-vip still does not come up.

ansible/roles/kube-vip-deploy/defaults/main.yml

@@ -2,3 +2,6 @@
 kube_vip_version: v1.1.2
 kube_vip_interface: "{{ ansible_default_ipv4.interface | default('eth0') }}"
 kube_vip_address: "{{ kube_api_endpoint }}"
+kube_vip_prepull_images:
+  - docker.io/rancher/mirrored-pause:3.6
+  - ghcr.io/kube-vip/kube-vip:{{ kube_vip_version }}

ansible/roles/kube-vip-deploy/tasks/main.yml

@@ -1,4 +1,13 @@
 ---
+- name: Pre-pull kube-vip bootstrap images into containerd
+  command: /usr/local/bin/ctr -n k8s.io images pull {{ item }}
+  register: kube_vip_image_pull
+  retries: 12
+  delay: 15
+  until: kube_vip_image_pull.rc == 0
+  loop: "{{ kube_vip_prepull_images }}"
+  changed_when: true
+
 - name: Render kube-vip control plane manifest
   template:
     src: kube-vip-control-plane.yaml.j2
@@ -18,9 +27,36 @@
   register: kube_vip_pod_ready
   changed_when: false
   until: kube_vip_pod_ready.stdout == "True"
-  retries: 18
+  retries: 30
   delay: 10
 
+- name: Show kube-vip pod status on failure
+  command: kubectl -n kube-system get pods -l app.kubernetes.io/name=kube-vip -o wide
+  register: kube_vip_pods
+  changed_when: false
+  failed_when: false
+  when: kube_vip_pod_ready is failed
+
+- name: Describe kube-vip pod on failure
+  shell: >-
+    kubectl -n kube-system describe pod
+    $(kubectl -n kube-system get pods -l app.kubernetes.io/name=kube-vip --field-selector spec.nodeName={{ inventory_hostname }} -o jsonpath='{.items[0].metadata.name}')
+  register: kube_vip_pod_describe
+  changed_when: false
+  failed_when: false
+  when: kube_vip_pod_ready is failed
+
+- name: Fail with kube-vip diagnostics
+  fail:
+    msg: |
+      kube-vip failed to become ready on {{ inventory_hostname }}.
+      Pods:
+      {{ kube_vip_pods.stdout | default('n/a') }}
+
+      Describe:
+      {{ kube_vip_pod_describe.stdout | default('n/a') }}
+  when: kube_vip_pod_ready is failed
+
 - name: Wait for API VIP on 6443
   wait_for:
     host: "{{ kube_vip_address }}"