the vagrant machine doesn't need to use a local repo to come up

Change-Id: I97a7dacd5d2a136d7b82a8f8eaf9dba89d8ef87a
diff --git a/ansible/roles/docker/tasks/debian.yml b/ansible/roles/docker/tasks/debian.yml
index 94188b1..f590f17 100644
--- a/ansible/roles/docker/tasks/debian.yml
+++ b/ansible/roles/docker/tasks/debian.yml
@@ -1,6 +1,6 @@
 - name: Debian add Docker repository and update apt cache
   apt_repository:
-    repo: "{{ docker_apt_repo | default('deb https://apt.dockerproject.org/repo ubuntu-{{ debian_version }} main') }}"
+    repo: deb https://apt.dockerproject.org/repo ubuntu-{{ debian_version }} main
     update_cache: yes
     state: present
   tags: [docker]