kube-router: pull router-id from node label

cluster1/kube-router/kube-router-all-service-daemonset.yaml

@@ -55,6 +55,7 @@ spec:
           - "--advertise-loadbalancer-ip=false"
           - "--advertise-cluster-ip=false"
           - "--route-sync-period=10s"
+          - "--router-id=${ROUTER_ID}"
           - "--bgp-graceful-restart=true"
           - "--kubeconfig=/var/lib/kube-router/kubeconfig/kubeconfig"
         securityContext:
@@ -65,6 +66,10 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: spec.nodeName
+        - name: ROUTER_ID
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.labels.routerid
         - name: KUBE_ROUTER_CNI_CONF_FILE
           value: /etc/cni/net.d/10-kuberouter.conflist
         livenessProbe: