Add docker oss_backend network

Change-Id: I84019ed74b830836ebdf69b9a72bc56c54f4a5ec
diff --git a/classes/cluster/drivetrain-ha-clusters/cicd/control/init.yml b/classes/cluster/drivetrain-ha-clusters/cicd/control/init.yml
index 0122cf9..2ce0ac6 100644
--- a/classes/cluster/drivetrain-ha-clusters/cicd/control/init.yml
+++ b/classes/cluster/drivetrain-ha-clusters/cicd/control/init.yml
@@ -49,6 +49,7 @@
   - system.docker.swarm.stack.security_monkey
   # Docker networks
   - system.docker.swarm.network.runbook
+  - system.docker.swarm.network.oss_backend
 
   # Aptly
   # We need aptly-publisher.yml on each node for our Jenkins slaves in docker