CORD-391 - cleaned up ansible to pass cleanly through ansible-lint

Change-Id: I90284704255edc19abbdb239852c520a4bf48df4
diff --git a/ansible/roles/docker/tasks/debian.yml b/ansible/roles/docker/tasks/debian.yml
index aa10934..55178b1 100644
--- a/ansible/roles/docker/tasks/debian.yml
+++ b/ansible/roles/docker/tasks/debian.yml
@@ -7,8 +7,8 @@
 
 - name: Debian Docker is present
   apt:
-    name: docker-engine
-    state: latest
+    name: docker-engine=1.12*
+    state: present
     force: yes
   tags: [docker]
 
@@ -58,4 +58,4 @@
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
   when: not skip_ui is defined
-  tags: [docker]
\ No newline at end of file
+  tags: [docker]