Fixing cert name in calico/canal for etcd check (#2358)

roles/network_plugin/calico/tasks/main.yml

@@ -83,8 +83,8 @@
   uri:
     url: https://localhost:2379/health
     validate_certs: no
-    client_cert: "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}.pem"
-    client_key: "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}-key.pem"
+    client_cert: "{{ etcd_cert_dir }}/node-{{ groups['etcd'][0] }}.pem"
+    client_key: "{{ etcd_cert_dir }}/node-{{ groups['etcd'][0] }}-key.pem"
   register: result
   until: result.status == 200 or result.status == 401
   retries: 10

roles/network_plugin/canal/tasks/main.yml

@@ -35,8 +35,8 @@
   changed_when: false
   run_once: true
   environment:
-    ETCDCTL_CERT_FILE: "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}.pem"
-    ETCDCTL_KEY_FILE: "{{ etcd_cert_dir }}/node-{{ inventory_hostname }}-key.pem"
+    ETCDCTL_CERT_FILE: "{{ etcd_cert_dir }}/node-{{ groups['etcd'][0] }}.pem"
+    ETCDCTL_KEY_FILE: "{{ etcd_cert_dir }}/node-{{ groups['etcd'][0] }}-key.pem"
 
 - name: Canal | Create canal node manifests
   template: