Fix etcd synchronize to other nodes from the downloader

roles/etcd/tasks/install.yml

@@ -3,12 +3,15 @@
   user: name=etcd shell=/bin/nologin home=/var/lib/etcd
 
 - name: Install etcd binaries
-  copy:
-     src={{ etcd_bin_dir }}/{{ item }}
-     dest={{ bin_dir }}
-     owner=etcd
-     mode=0755
+  synchronize:
+     src: "{{ etcd_bin_dir }}/{{ item }}"
+     dest: "{{ bin_dir }}"
+     times: yes
+     archive: no
+     set_remote_user: false
+  delegate_to: "{{ groups['downloader'][0] }}"
   with_items:
     - etcdctl
     - etcd
   notify: restart etcd
+