Add download bin tasks (#7131)

* Add downlaod bin tasks

* Add tags never and etcd

* yamllint

roles/etcd/tasks/install_host.yml

 ---
+- name: install | Download etcd and etcdctl
+  include_tasks: "../../download/tasks/download_file.yml"
+  vars:
+    download: "{{ download_defaults | combine(downloads.etcd) }}"
+  when: etcd_cluster_setup
+  tags:
+    - never
+    - etcd
+
 - name: install | Copy etcd and etcdctl binary from download dir
   copy:
     src: "{{ local_release_dir }}/etcd-{{ etcd_version }}-linux-{{ host_architecture }}/{{ item }}"
@@ -6,6 +15,6 @@
     mode: 0755
     remote_src: yes
   with_items:
-  - etcd
-  - etcdctl
+    - etcd
+    - etcdctl
   when: etcd_cluster_setup