Update Kube-router version to v0.4.0 (#5756)

roles/network_plugin/kube-router/templates/cni-conf.json.j2

@@ -1,13 +1,21 @@
 {
-  "name":"kubernetes",
-  "cniVersion": "0.2.0",
-  "type":"bridge",
-  "bridge":"kube-bridge",
-  "isDefaultGateway":true,
+   "cniVersion":"0.3.0",
+   "name":"kubernetes",
+   "plugins":[
+      {
+         "name":"kubernetes",
+         "type":"bridge",
+         "bridge":"kube-bridge",
+         "isDefaultGateway":true,
 {% if kube_router_support_hairpin_mode %}
-  "hairpinMode":true,
+          "hairpinMode":true,
 {% endif %}
-  "ipam": {
-    "type":"host-local"
-  }
+         "ipam":{
+{% if host_subnet is defined %}
+            "subnet": "{{ host_subnet }}",
+{% endif %}
+            "type":"host-local"
+         }
+      }
+   ]
 }

roles/network_plugin/kube-router/templates/kube-router.yml.j2

@@ -69,6 +69,8 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: spec.nodeName
+        - name: KUBE_ROUTER_CNI_CONF_FILE
+          value: /etc/cni/net.d/10-kuberouter.conflist
         livenessProbe:
           httpGet:
             path: /healthz