Merge "Run etcd on controller node only"

ansible/roles/etcd/defaults/main.yml

@@ -37,4 +37,4 @@ etcd_image_full: "{{ etcd_image }}:{{ etcd_tag }}"
 etcd_dimensions: "{{ default_container_dimensions }}"
 
 # List of hosts running etcd.
-etcd_hosts: "{{ groups['control'] + (groups['compute'] if enable_kuryr | bool else []) }}"
+etcd_hosts: "{{ groups['control'] }}"