Add helm support for custom_cni deployment (#10529)

* Add helm support for custom_cni deployment

* Linting correction

* Ansible linting correction

* Add test packet with values

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

* Add custom_cni configuration file with comments

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

* Default values cleanup

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

* Add details to custom_cni configuration file

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

* Set correct yaml type of helm values

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

* Set CNI filesystem ownership to root

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

* Update cilium example parameter name

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

---------

Signed-off-by: Lukáš Kubín <lukas.kubin@gmail.com>

tests/files/packet_debian12-custom-cni-helm.yml

@@ -0,0 +1,23 @@
+---
+# Instance settings
+cloud_image: debian-12
+mode: default
+
+# Kubespray settings
+kube_owner: root
+kube_network_plugin: custom_cni
+custom_cni_chart_namespace: kube-system
+custom_cni_chart_release_name: cilium
+custom_cni_chart_repository_name: cilium
+custom_cni_chart_repository_url: https://helm.cilium.io
+custom_cni_chart_ref: cilium/cilium
+custom_cni_chart_version: 1.14.3
+custom_cni_chart_values:
+  cluster:
+    name: kubespray
+  hubble:
+    enabled: false
+  ipam:
+    operator:
+      clusterPoolIPv4PodCIDRList:
+        - "{{ kube_pods_subnet }}"