AETHER-2698 Docker role updates

- Add an ability to configure daemon option
- Add an option to install docker-compose
- Separate task for updating apt repository, and make it conditional

Change-Id: Iafff1635f9af07a9712124f82c2f3b27fb6e557c
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index b35d80b..b9fac05 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -6,6 +6,11 @@
 
 - name: Converge
   hosts: all
+  vars:
+    docker_daemon_options:
+      registry-mirrors:
+        - http://registry.aetherproject.net
+    docker_install_compose: true
   tasks:
     - name: "Include docker"
       include_role: