roles: docker: Update docker service for SUSE distributions (#3924)

The containerd service and socket files have been dropped from the
openSUSE docker package so we should not require them in the docker
service anymore. This makes the docker service file look similar to
the one shipped by the openSUSE package.

Signed-off-by: Markos Chandras <mchandras@suse.de>

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

@@ -8,8 +8,7 @@ Wants=docker-storage-setup.service
 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
+After=network.target
 {% endif %}
 
 [Service]
@@ -23,7 +22,7 @@ Delegate=yes
 KillMode=process
 ExecStart={{ docker_bin_dir }}/docker{% if installed_docker_version.stdout is version('17.03', '<') %} daemon{% else %}d{% endif %} \
 {% if ansible_os_family == "Suse" %}
-          --containerd /run/containerd/containerd.sock --add-runtime oci=/usr/bin/docker-runc \
+          --add-runtime oci=/usr/sbin/docker-runc \
 {% endif %}
           $DOCKER_OPTS \
           $DOCKER_STORAGE_OPTIONS \