kubernetes + containerd installer

Signed-off-by: Abhinandan Prativadi <abhi@docker.com>

contrib/ansible/tasks/binaries.yaml

@@ -0,0 +1,51 @@
+---
+- name: "Create a directory to download binaries"
+  file: path={{ cri_release_directory }} state=directory
+
+- name: "Get Containerd and CRI-Containerd"
+  get_url:
+    validate_certs: "no"
+    url: "https://storage.googleapis.com/cri-containerd-staging/cri-containerd-{{ cri_containerd_release_version }}.tar.gz"
+    dest: "{{ cri_release_directory }}"
+    mode: 0755
+
+- name: "Unpack Containerd and CRI-Containerd"
+  unarchive:
+    src: "{{ cri_release_directory }}cri-containerd-{{ cri_containerd_release_version }}.tar.gz"
+    dest: "{{ cri_release_directory }}"
+    remote_src: yes
+
+- name: "Install the containerd and cri-containerd binaries" 
+  copy:
+    src: "{{ cri_release_directory }}usr/local/bin/{{ item }}"
+    dest: "{{ local_bin_dir }}{{ item }}"
+    mode: 0755
+    remote_src: yes
+  with_items:
+    - containerd
+    - containerd-stress
+    - containerd-shim
+    - cri-containerd
+    - ctr
+    - crictl
+
+- name: "Install runc"
+  copy:    
+    src: "{{ cri_release_directory }}usr/local/sbin/{{ item }}"
+    dest: "{{ local_sbin_dir }}{{ item }}"
+    mode: 0755
+    remote_src: yes
+  with_items:
+    - runc
+
+- name: "Copy containerd systemd service unit"
+  template: src=../../systemd-units/containerd.service dest=/etc/systemd/system/containerd.service
+
+- name: "Copy cri-containerd systemd service unit"
+  template: src=../../systemd-units/cri-containerd.service dest=/etc/systemd/system/cri-containerd.service
+
+- name: "Create a directory for cni binary"
+  file: path={{ cni_bin_dir }} state=directory
+
+- name: "Create a directory for cni config files"
+  file: path={{ cni_conf_dir }} state=directory

contrib/ansible/tasks/bootstrap_centos.yaml

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+---
+- name: "Install required packages on CentOS "
+  yum:
+    name: "{{ item }}"
+    state: latest
+    with_items:
+      - unzip
+      - tar
+      - btrfs-progs-devel
+      - libseccomp-devel
+      - util-linux 
+      - socat
+      - libselinux-python

contrib/ansible/tasks/bootstrap_ubuntu.yaml

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+---
+- name: "Install required packages on Ubuntu"
+  package:
+    name: "{{ item }}"
+    state: latest
+  with_items:
+      - unzip
+      - tar
+      - apt-transport-https
+      - btrfs-tools
+      - libapparmor-dev
+      - libseccomp-dev # Revisit the need and alternatives for all -dev packages
+      - libseccomp2
+      - socat
+      - util-linux
+# TODO: Limited support for trusty for nsenter. Need to handle/verify 

contrib/ansible/tasks/k8s.yaml

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+---
+- name: "Add gpg key (Ubuntu)"
+  apt_key:
+    url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
+    state: present
+  when: ansible_distribution == "Ubuntu"
+
+- name: "Add kubernetes source list (Ubuntu)"
+  apt_repository:
+    repo: "deb http://apt.kubernetes.io/ kubernetes-{{ ansible_distribution_release }} main"
+    state: present
+    filename: "kubernetes"
+  when: ansible_distribution == "Ubuntu"
+
+- name: "Update the repository cache (Ubuntu)"
+  apt: 
+    update_cache: yes
+  when: ansible_distribution == "Ubuntu"
+
+- name: "Add Kubernetes repository and install gpg key (CentOS)"
+  yum_repository:
+    name: kubernetes
+    description: Kubernetes repository
+    baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
+    gpgcheck: yes
+    enabled: yes
+    repo_gpgcheck: yes
+    gpgkey: https://packages.cloud.google.com/yum/doc/yum-key.gpg
+  when: ansible_distribution == "CentOS"
+
+- name: "Disable SELinux (CentOS)"
+  selinux:
+    state: disabled
+  when: ansible_distribution == "CentOS"
+
+- name: "Install kubelet,kubeadm,kubectl (CentOS)"
+  yum: state=present name={{ item }}
+  with_items:
+    - kubelet
+    - kubeadm
+    - kubectl
+  when: ansible_distribution == "CentOS"
+
+- name: "Install kubelet, kubeadm, kubectl (Ubuntu)"
+  apt: name={{item}} state=installed
+  with_items:
+    - kubelet
+    - kubeadm
+    - kubectl
+  when: ansible_distribution == "Ubuntu"