Add --timeout option to Longhorn Helm upgrade tasks for improved deployment control

ansible/roles/noble_longhorn/defaults/main.yml

@@ -0,0 +1,4 @@
+---
+# Helm --wait default (5m) is often too short for first Longhorn install on several nodes
+# (image pulls + manager/driver ordering). See ansible/roles/noble_metallb/defaults/main.yml.
+noble_helm_longhorn_wait_timeout: 20m

ansible/roles/noble_longhorn/tasks/main.yml

@@ -27,6 +27,8 @@
       - "{{ noble_repo_root }}/clusters/noble/bootstrap/longhorn/values.yaml"
       - --force-conflicts
       - --wait
+      - --timeout
+      - "{{ noble_helm_longhorn_wait_timeout }}"
   environment:
     KUBECONFIG: "{{ noble_kubeconfig }}"
   changed_when: true