remove useless etcd download, runs into docker containers

roles/download/tasks/etcd.yml

----
-- name: Create etcd release directory
-  local_action: file
-     path={{ local_release_dir }}/etcd/bin
-     recurse=yes
-     state=directory
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Check if etcd release archive has been downloaded
-  local_action: stat
-     path={{ local_release_dir }}/etcd/etcd-{{ etcd_version }}-linux-amd64.tar.gz
-  register: e_tar
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-# issues with get_url module and redirects, to be tested again in the near future
-- name: Download etcd
-  local_action: shell
-    curl -o {{ local_release_dir }}/etcd/etcd-{{ etcd_version }}-linux-amd64.tar.gz -Ls {{ etcd_download_url }}/{{ etcd_version }}/etcd-{{ etcd_version }}-linux-amd64.tar.gz
-  when: not e_tar.stat.exists
-  register: dl_etcd
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Extract etcd archive
-  local_action: unarchive
-     src={{ local_release_dir }}/etcd/etcd-{{ etcd_version }}-linux-amd64.tar.gz
-     dest={{ local_release_dir }}/etcd copy=no
-  when: dl_etcd|changed
-  delegate_to: "{{ groups['kube-master'][0] }}"
-
-- name: Pick up only etcd binaries
-  local_action: copy
-     src={{ local_release_dir }}/etcd/etcd-{{ etcd_version }}-linux-amd64/{{ item }}
-     dest={{ local_release_dir }}/etcd/bin
-  with_items:
-    - etcdctl
-    - etcd
-  when: dl_etcd|changed
-
-- name: Delete unused etcd files
-  local_action: file
-     path={{ local_release_dir }}/etcd/etcd-{{ etcd_version }}-linux-amd64 state=absent
-  when: dl_etcd|changed

roles/download/tasks/main.yml

 ---
 - include: kubernetes.yml
-- include: etcd.yml
 - include: calico.yml
 - include: flannel.yml