Fix calico-node in etcd mode (#10438)

* Calico : add ETCD endpoints to install-cni container

* Calico : remove nodename from configmap in etcd mode

roles/network_plugin/calico/templates/calico-node.yml.j2

@@ -96,6 +96,13 @@ spec:
             # Prevents the container from sleeping forever.
             - name: SLEEP
               value: "false"
+{% if calico_datastore == "etcd" %}
+            - name: ETCD_ENDPOINTS
+              valueFrom:
+                configMapKeyRef:
+                  name: calico-config
+                  key: etcd_endpoints
+{% endif %}
 {% if calico_datastore == "kdd" %}
             # Set the hostname based on the k8s node name.
             - name: KUBERNETES_NODE_NAME