add vars for cilium init container (#3893)

* add vars for cilium init container

* make yamllint happy

* add var cilium_init in downloads

roles/download/defaults/main.yml

@@ -167,6 +167,8 @@ contiv_ovs_image_repo: "contiv/ovs"
 contiv_ovs_image_tag: "latest"
 cilium_image_repo: "docker.io/cilium/cilium"
 cilium_image_tag: "{{ cilium_version }}"
+cilium_init_image_repo: "docker.io/library/busybox"
+cilium_init_image_tag: "1.28.4"
 kube_router_image_repo: "cloudnativelabs/kube-router"
 kube_router_image_tag: "{{ kube_router_version }}"
 multus_image_repo: "docker.io/nfvpe/multus"
@@ -314,6 +316,15 @@ downloads:
     groups:
       - k8s-cluster
 
+  cilium_init:
+    enabled: "{{ kube_network_plugin == 'cilium' }}"
+    container: true
+    repo: "{{ cilium_init_image_repo }}"
+    tag: "{{ cilium_init_image_tag }}"
+    sha256: "{{ cilium_init_digest_checksum|default(None) }}"
+    groups:
+      - k8s-cluster
+
   multus:
     enabled: "{{ kube_network_plugin_multus }}"
     container: true