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/templates/apt_preferences.d/debian_docker.j2

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+Package: docker-ce
+Pin: version {{ docker_version }}.*
+Pin-Priority: 1001

roles/container-engine/docker/templates/docker-dns.conf.j2

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+[Service]
+Environment="DOCKER_DNS_OPTIONS=\
+    {% for d in docker_dns_servers %}--dns {{ d }} {% endfor %} \
+    {% for d in docker_dns_search_domains %}--dns-search {{ d }} {% endfor %} \
+    {% for o in docker_dns_options %}--dns-opt {{ o }} {% endfor %} \
+"

roles/container-engine/docker/templates/docker-options.conf.j2

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+[Service]
+Environment="DOCKER_OPTS={{ docker_options|default('') }} --iptables={{ docker_iptables_enabled | default('false') }}"
+{% if docker_mount_flags is defined and docker_mount_flags != "" %}
+MountFlags={{ docker_mount_flags }}
+{% endif %}

roles/container-engine/docker/templates/docker.service.j2

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+[Unit]
+Description=Docker Application Container Engine
+Documentation=http://docs.docker.com
+{% if ansible_os_family == "RedHat" %}
+After=network.target docker-storage-setup.service
+Wants=docker-storage-setup.service
+{% elif ansible_os_family == "Debian" %}
+After=network.target docker.socket
+Wants=docker.socket
+{% elif ansible_os_family == "Suse" %}
+After=network.target containerd.socket containerd.service
+Requires=containerd.socket containerd.service
+{% endif %}
+
+[Service]
+Type=notify
+{% if docker_storage_options is defined %}
+Environment="DOCKER_STORAGE_OPTIONS={{ docker_storage_options }}"
+{% endif %}
+Environment=GOTRACEBACK=crash
+ExecReload=/bin/kill -s HUP $MAINPID
+Delegate=yes
+KillMode=process
+ExecStart={{ docker_bin_dir }}/docker{% if installed_docker_version.stdout|version_compare('17.03', '<') %} daemon{% else %}d{% endif %} \
+{% if ansible_os_family == "Suse" %}
+          --containerd /run/containerd/containerd.sock --add-runtime oci=/usr/bin/docker-runc \
+{% endif %}
+          $DOCKER_OPTS \
+          $DOCKER_STORAGE_OPTIONS \
+          $DOCKER_NETWORK_OPTIONS \
+          $DOCKER_DNS_OPTIONS \
+          $INSECURE_REGISTRY
+{% if not is_atomic and systemd_version.stdout|int >= 226 %}
+TasksMax=infinity
+{% endif %}
+LimitNOFILE=1048576
+LimitNPROC=1048576
+LimitCORE=infinity
+TimeoutStartSec=1min
+# restart the docker process if it exits prematurely
+Restart=on-failure
+StartLimitBurst=3
+StartLimitInterval=60s
+
+[Install]
+WantedBy=multi-user.target

roles/container-engine/docker/templates/fedora_docker.repo.j2

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+[docker-ce]
+name=Docker-CE Repository
+baseurl={{ docker_fedora_repo_base_url }}
+enabled=1
+gpgcheck=1
+gpgkey={{ docker_fedora_repo_gpgkey }}
+{% if http_proxy is defined %}proxy={{ http_proxy }}{% endif %}

roles/container-engine/docker/templates/http-proxy.conf.j2

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+[Service]
+Environment={% if http_proxy is defined %}"HTTP_PROXY={{ http_proxy }}"{% endif %} {% if https_proxy is defined %}"HTTPS_PROXY={{ https_proxy }}"{% endif %} {% if no_proxy is defined %}"NO_PROXY={{ no_proxy }}"{% endif %}

roles/container-engine/docker/templates/rh_docker.repo.j2

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+[docker-ce]
+name=Docker-CE Repository
+baseurl={{ docker_rh_repo_base_url }}
+enabled=1
+gpgcheck=1
+gpgkey={{ docker_rh_repo_gpgkey }}
+{% if http_proxy is defined %}proxy={{ http_proxy }}{% endif %}
+
+[docker-engine]
+name=Docker-Engine Repository
+baseurl={{ dockerproject_rh_repo_base_url }}
+enabled=1
+gpgcheck=1
+gpgkey={{ dockerproject_rh_repo_gpgkey }}
+{% if http_proxy is defined %}proxy={{ http_proxy }}{% endif %}