Allow etcd member join by checking cluster health only on first etcd (#5032)

Change-Id: I9cc01cef3a437893225e2d9f58495826bbce7be9

roles/etcd/tasks/configure.yml

@@ -64,7 +64,7 @@
   when: is_etcd_master and etcd_events_cluster_setup
 
 - name: Configure | Check if etcd cluster is healthy
-  shell: "{{ bin_dir }}/etcdctl --endpoints={{ etcd_access_addresses }} cluster-health | grep -q 'cluster is healthy'"
+  shell: "{{ bin_dir }}/etcdctl --no-sync --endpoints={{ etcd_client_url }} cluster-health | grep -q 'cluster is healthy'"
   register: etcd_cluster_is_healthy
   until: etcd_cluster_is_healthy.rc == 0
   retries: 4
@@ -72,7 +72,11 @@
   ignore_errors: false
   changed_when: false
   check_mode: no
-  when: is_etcd_master and etcd_cluster_setup
+  delegate_to: "{{ groups['etcd'][0] }}"
+  run_once: yes
+  when:
+    - is_etcd_master
+    - etcd_cluster_setup
   tags:
     - facts
   environment:
@@ -81,7 +85,7 @@
     ETCDCTL_CA_FILE: "{{ etcd_cert_dir }}/ca.pem"
 
 - name: Configure | Check if etcd-events cluster is healthy
-  shell: "{{ bin_dir }}/etcdctl --endpoints={{ etcd_events_access_addresses }} cluster-health | grep -q 'cluster is healthy'"
+  shell: "{{ bin_dir }}/etcdctl --no-sync --endpoints={{ etcd_events_client_url }} cluster-health | grep -q 'cluster is healthy'"
   register: etcd_events_cluster_is_healthy
   until: etcd_events_cluster_is_healthy.rc == 0
   retries: 4
@@ -89,7 +93,12 @@
   ignore_errors: false
   changed_when: false
   check_mode: no
-  when: is_etcd_master and etcd_events_cluster_setup
+  delegate_to: "{{ groups['etcd'][0] }}"
+  run_once: yes
+  when:
+    - is_etcd_master
+    - etcd_events_cluster_setup
+    - etcd_cluster_setup
   tags:
     - facts
   environment: