Split deploy steps in separate playbooks: part1 (#3451)

* Fix bootstrap_os/ubuntu idempotency

* Update bastion role

* move container_engine in sub-roles

* requires ansible 2.5

* ubuntu18 as first CI job

roles/container-engine/docker/vars/redhat.yml

@@ -0,0 +1,56 @@
+---
+docker_kernel_min_version: '0'
+
+# https://docs.docker.com/engine/installation/linux/centos/#install-from-a-package
+# https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
+# https://yum.dockerproject.org/repo/main/centos/7
+# or do 'yum --showduplicates list docker-engine'
+docker_versioned_pkg:
+  'latest': docker-ce
+  '1.11': docker-engine-1.11.2-1.el7.centos
+  '1.12': docker-engine-1.12.6-1.el7.centos
+  '1.13': docker-engine-1.13.1-1.el7.centos
+  '17.03': docker-ce-17.03.2.ce-1.el7.centos
+  '17.09': docker-ce-17.09.0.ce-1.el7.centos
+  '17.12': docker-ce-17.12.1.ce-1.el7.centos
+  '18.03': docker-ce-18.03.1.ce-1.el7.centos
+  '18.06': docker-ce-18.06.1.ce-3.el7
+  'stable': docker-ce-18.06.1.ce-3.el7
+  'edge': docker-ce-17.12.1.ce-1.el7.centos
+
+docker_selinux_versioned_pkg:
+  'latest': docker-ce-selinux
+  '1.11': docker-engine-selinux-1.11.2-1.el7.centos
+  '1.12': docker-engine-selinux-1.12.6-1.el7.centos
+  '1.13': docker-engine-selinux-1.13.1-1.el7.centos
+  '17.03': docker-ce-selinux-17.03.2.ce-1.el7.centos
+  'stable': docker-ce-selinux-17.03.2.ce-1.el7.centos
+  'edge': docker-ce-selinux-17.03.2.ce-1.el7.centos
+
+
+docker_pkgs_use_docker_ce:
+  - name: "{{ docker_selinux_versioned_pkg[docker_selinux_version | string] }}"
+    yum_conf: "{{ docker_yum_conf }}"
+  - name: "{{ docker_versioned_pkg[docker_version | string] }}"
+    yum_conf: "{{ docker_yum_conf }}"
+
+docker_pkgs:
+  - name: "{{ docker_versioned_pkg[docker_version | string] }}"
+    yum_conf: "{{ docker_yum_conf }}"
+
+docker_package_info:
+  pkg_mgr: yum
+  pkgs: |-
+    {%- if docker_version | version_compare('17.04', '<') -%}
+    {{ docker_pkgs_use_docker_ce }}
+    {%- else -%}
+    {{ docker_pkgs }}
+    {%- endif %}
+
+docker_repo_key_info:
+  pkg_key: ''
+  repo_keys: []
+
+docker_repo_info:
+  pkg_repo: ''
+  repos: []