Refactor cilium_ipsec_enabled check (#7520)

This is a followup to

https://github.com/kubernetes-sigs/kubespray/pull/7413

Although the code worked there was a desire for a better solution.
Hopefully people will be happy with this alternative.

roles/network_plugin/cilium/tasks/install.yml

@@ -33,14 +33,14 @@
     - {name: cilium, file: cilium-config.yml, type: cm}
     - {name: cilium, file: cilium-crb.yml, type: clusterrolebinding}
     - {name: cilium, file: cilium-cr.yml, type: clusterrole}
-    - {name: cilium, file: cilium-secret.yml, type: secret}
+    - {name: cilium, file: cilium-secret.yml, type: secret, when: "{{ cilium_ipsec_enabled }}"}
     - {name: cilium, file: cilium-ds.yml, type: ds}
     - {name: cilium, file: cilium-deploy.yml, type: deploy}
     - {name: cilium, file: cilium-sa.yml, type: sa}
   register: cilium_node_manifests
   when:
     - inventory_hostname in groups['kube_control_plane']
-    - item.file != "cilium-secret.yml" or (item.file == "cilium-secret.yml" and cilium_ipsec_enabled)
+    - item.when | default(True) | bool
 
 - name: Cilium | Enable portmap addon
   template: