install docker on a largest number of linux distribution (based on https://github.com/marklee77/ansible-role-docker)

roles/common/tasks/calico.yml

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+---
+- name: Create calico release directory
+  local_action: file
+     path={{ local_release_dir }}/calico/bin
+     recurse=yes
+     state=directory
+  delegate_to: "{{ groups['kube-master'][0] }}"
+
+- name: Check if calicoctl has been downloaded
+  local_action: stat
+     path={{ local_release_dir }}/calico/bin/calicoctl
+  register: c_tar
+  delegate_to: "{{ groups['kube-master'][0] }}"
+
+# issues with get_url module and redirects, to be tested again in the near future
+- name: Download calico
+  local_action: shell
+    curl -o {{ local_release_dir }}/calico/bin/calicoctl -Ls {{ calico_download_url }}/{{ calico_version }}/calicoctl
+  when: not c_tar.stat.exists
+  register: dl_calico
+  delegate_to: "{{ groups['kube-master'][0] }}"
+
+
+- name: Download calico-kubernetes-plugin
+  local_action: get_url
+    url="{{calico_plugin_download_url}}"
+    dest="{{ local_release_dir }}/calico/bin/calico"

roles/common/tasks/flannel.yml

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

roles/common/tasks/kubernetes.yml

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+---
+- name: Create kubernetes binary directory
+  local_action: file
+     path="{{ local_release_dir }}/kubernetes/bin"
+     state=directory
+     recurse=yes
+
+- name: Download kubelet and kubectl
+  local_action: get_url
+    url="{{ kube_download_url }}/{{ item.name }}"
+    dest="{{ local_release_dir }}/kubernetes/bin"
+    sha256sum="{{ item.checksum }}"
+  with_items:
+    - name: kubelet
+      checksum: "{{ kubelet_checksum }}"
+    - name: kubectl
+      checksum: "{{ kubectl_checksum }}"

roles/common/tasks/main.yml

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+---
+- include: download.yml
+  delegate_to: localhost
+  when: inventory_hostname == "{{ groups['kube-master'][0] }}"
+
+- include: pip-bootstrap.yml
+
+- name: Install httplib2 python module
+  pip:
+    executable: "{{ ansible_user_dir }}/bin/pip"
+    name: "{{ item }}"
+  with_items: pip_python_modules