Network plugin custom (#9819)

* network_plugin/custom_cni: add CNI to apply provided manifests

Add a new simple custom_cni to install provided Kubernetes manifests.
This could be useful to use manifests directly provided by a CNI when
there are not support by Kubespray (i.e.: helm chart or any other manifests
generation method).

Co-authored-by: James Landrein <james.landrein@proton.ch>
Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

* network_plugin/custom_cni: add test with cilium

Co-authored-by: James Landrein <james.landrein@proton.ch>
Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

---------

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>
Co-authored-by: James Landrein <james.landrein@proton.ch>

roles/network_plugin/custom_cni/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+
+custom_cni_manifests: []

roles/network_plugin/custom_cni/tasks/main.yml

@@ -0,0 +1,27 @@
+---
+
+- name: Cilium | Check Cilium encryption `cilium_ipsec_key` for ipsec
+  assert:
+    that:
+      - "custom_cni_manifests | length > 0"
+    msg: "custom_cni_manifests should not be empty"
+
+- name: Custom CNI | Copy Custom manifests
+  template:
+    src: "{{ item }}"
+    dest: "{{ kube_config_dir }}/{{ item | basename | replace('.j2', '') }}"
+    mode: 0644
+  loop: "{{ custom_cni_manifests }}"
+  delegate_to: "{{ groups['kube_control_plane'] | first }}"
+  run_once: true
+
+- name: Custom CNI | Start Resources
+  kube:
+    namespace: "kube-system"
+    kubectl: "{{ bin_dir }}/kubectl"
+    filename: "{{ kube_config_dir }}/{{ item | basename | replace('.j2', '') }}"
+    state: "latest"
+    wait: true
+  loop: "{{ custom_cni_manifests }}"
+  delegate_to: "{{ groups['kube_control_plane'] | first }}"
+  run_once: true

roles/network_plugin/meta/main.yml

@@ -42,6 +42,11 @@ dependencies:
     tags:
       - kube-router
 
+  - role: network_plugin/custom_cni
+    when: kube_network_plugin == 'custom_cni'
+    tags:
+      - custom_cni
+
   - role: network_plugin/multus
     when: kube_network_plugin_multus
     tags: