Add cilium_extra_values to make use of any cilium values (#12375)

fix noqa

inventory/sample/group_vars/k8s_cluster/k8s-net-cilium.yml

@@ -384,3 +384,7 @@ cilium_l2announcements: false
 #       resourceNames:
 #       - toto
 # cilium_clusterrole_rules_operator_extra_vars: []
+
+# Cilium extra values, use any values from cilium Helm Chart
+# ref: https://docs.cilium.io/en/stable/helm-reference/
+# cilium_extra_values: {}