[CORD-1857]
Revert to older docker-compose version to fix Ansible docker_service module

Change-Id: I49eb8a856ecb48a1d2deb699c4f06524ff4802be
diff --git a/roles/docker/tasks/main.yml b/roles/docker/tasks/main.yml
index 074ac82..792cfdd 100644
--- a/roles/docker/tasks/main.yml
+++ b/roles/docker/tasks/main.yml
@@ -67,7 +67,7 @@
     name: "{{ item }}"
   with_items:
     - "docker==2.4.2"
-    - "docker-compose==1.14.0"
+    - "docker-compose==1.15.0"
 
 - name: Make current user part of the Docker group
   become: yes