feat: Add cilium_install_extra_flags (#12262)

Enable to use --chart-directory options etc for offline installation

Signed-off-by: Takuya Murakami <murakami_da@nec.com>

roles/network_plugin/cilium/defaults/main.yml

@@ -355,3 +355,6 @@ cilium_certgen_args:
 
 cilium_enable_host_firewall: false
 cilium_policy_audit_mode: false
+
+# Cilium extra install flags
+cilium_install_extra_flags: ""

roles/network_plugin/cilium/tasks/apply.yml

@@ -11,7 +11,7 @@
     cilium_action: "{{ 'install' if ('release: not found' in cilium_release_info.stderr | default('') or 'release: not found' in cilium_release_info.stdout | default('')) else 'upgrade' }}"
 
 - name: Cilium | Install
-  command: "{{ bin_dir }}/cilium {{ cilium_action }} --version {{ cilium_version }} -f {{ kube_config_dir }}/cilium-values.yaml"
+  command: "{{ bin_dir }}/cilium {{ cilium_action }} --version {{ cilium_version }} -f {{ kube_config_dir }}/cilium-values.yaml {{ cilium_install_extra_flags }}"
   when: inventory_hostname == groups['kube_control_plane'][0]
 
 - name: Cilium | Wait for pods to run