dynamically calculate etcd peer names

roles/kubernetes/preinstall/tasks/set_facts.yml

@@ -29,6 +29,7 @@
 - set_fact: etcd_endpoint="http://{{ etcd_authority }}"
 - set_fact:
     etcd_access_addresses: |-
+      {% for item in groups['etcd'] -%}
         http://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2379{% if not loop.last %},{% endif %}
       {%- endfor %}
 - set_fact: etcd_access_endpoint="{% if etcd_multiaccess %}{{ etcd_access_addresses }}{% else %}{{ etcd_endpoint }}{% endif %}"
@@ -40,7 +41,7 @@
 - set_fact:
     etcd_peer_addresses: |-
       {% for item in groups['etcd'] -%}
-        http://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2380{% if not loop.last %},{% endif %}
+        {{ "etcd"+loop.index|string }}=http://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2380{% if not loop.last %},{% endif %}
       {%- endfor %}
 - set_fact:
     etcd_proxy_member_name: |-