feat: Add support for cilium 1.15 and updated cilium to v1.15.4 (#11106)

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

@@ -1,5 +1,5 @@
 ---
-# cilium_version: "v1.12.1"
+# cilium_version: "v1.15.4"
 
 # Log-level
 # cilium_debug: false
@@ -8,6 +8,9 @@
 # cilium_enable_ipv4: true
 # cilium_enable_ipv6: false
 
+# Enable l2 announcement from cilium to replace Metallb Ref: https://docs.cilium.io/en/v1.14/network/l2-announcements/
+cilium_l2announcements: false
+
 # Cilium agent health port
 # cilium_agent_health_port: "9879"
 
@@ -40,6 +43,10 @@
 
 # Overlay Network Mode
 # cilium_tunnel_mode: vxlan
+
+# LoadBalancer Mode (snat/dsr/hybrid) Ref: https://docs.cilium.io/en/stable/network/kubernetes/kubeproxy-free/#dsr-mode
+# cilium_loadbalancer_mode: snat
+
 # Optional features
 # cilium_enable_prometheus: false
 # Enable if you want to make use of hostPort mappings