Install docker from distro properly

The install-docker role was installing the wrong package name for distro
package based installations. docker-engine is ancient on debuntu and
appears to be called docker.io on both debian and ubuntu supported
releases now. Go ahead and install docker.io on the Debian family of
distros and docker on everything else (fedora, centos, suse, etc).

Change-Id: I0d7a9b8257bd6db86bc6e3d8bb3d6c3c021d7954

roles/install-docker/tasks/distros/Debian.yaml

@@ -1,5 +1,5 @@
 - name: Install docker
   become: yes
   package:
-    name: docker-engine
+    name: docker.io
     state: present

roles/install-docker/tasks/distros/default.yaml

@@ -0,0 +1,5 @@
+- name: Install docker
+  become: yes
+  package:
+    name: docker
+    state: present

roles/install-docker/tasks/main.yaml

@@ -14,8 +14,17 @@
   include: upstream.yaml
   when: use_upstream_docker
 
-- name: Install docker-engine from distro
-  include: distro.yaml
+- name: Install docker from distro
+  include_tasks: "{{ lookup('first_found', params) }}"
+  vars:
+    params:
+      files:
+        - "{{ ansible_distribution }}.{{ ansible_architecture }}.yaml"
+        - "{{ ansible_distribution }}.yaml"
+        - "{{ ansible_os_family }}.yaml"
+        - "default.yaml"
+      paths:
+        - distros
   when: not use_upstream_docker
 
 - name: Add user to docker group