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

fix noqa

roles/network_plugin/cilium/defaults/main.yml

@@ -362,3 +362,7 @@ cilium_policy_audit_mode: false
 
 # Cilium extra install flags
 cilium_install_extra_flags: ""
+
+# Cilium extra values, use any values from cilium Helm Chart
+# ref: https://docs.cilium.io/en/stable/helm-reference/
+cilium_extra_values: {}