Add identity_allocation_mode support for Cilium (#8430)

Co-authored-by: Emin Aktaş <eminaktas34@gmail.com>
Co-authored-by: Yasin Taha Erol <yasintahaerol@gmail.com>
Signed-off-by: necatican <necaticanyildirim@gmail.com>

Co-authored-by: Emin Aktaş <eminaktas34@gmail.com>
Co-authored-by: Yasin Taha Erol <yasintahaerol@gmail.com>

roles/network_plugin/cilium/templates/cilium-config.yml.j2

@@ -5,6 +5,9 @@ metadata:
   name: cilium-config
   namespace: kube-system
 data:
+  identity-allocation-mode: {{ identity_allocation_mode }}
+
+{% if identity_allocation_mode == "kvstore" %}
   # This etcd-config contains the etcd endpoints of your cluster. If you use
   # TLS please make sure you follow the tutorial in https://cilium.link/etcd-config
   etcd-config: |-
@@ -29,6 +32,7 @@ data:
   # https://docs.cilium.io/en/latest/cmdref/kvstore/
   kvstore: etcd
   kvstore-opt: '{"etcd.config": "/var/lib/etcd-config/etcd.config"}'
+{% endif %}
 
   # If you want metrics enabled in all of your Cilium agents, set the port for
   # which the Cilium agents will have their metrics exposed.